21864780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:133

約数の個数: 216

約数和(自身を含む): 80419248

約数和(自身を除く): 58554468

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 49, 60, 63, 67, 70, 74, 84, 90, 98, 105, 111, 126, 134, 140, 147, 148, 180, 185, 196, 201, 210, 222, 245, 252, 259, 268, 294, 315, 333, 335, 370, 402, 420, 441, 444, 469, 490, 518, 555, 588, 603, 630, 666, 670, 735, 740, 777, 804, 882, 938, 980, 1005, 1036, 1110, 1206, 1260, 1295, 1332, 1340, 1407, 1470, 1554, 1665, 1764, 1813, 1876, 2010, 2205, 2220, 2331, 2345, 2412, 2479, 2590, 2814, 2940, 3015, 3108, 3283, 3330, 3626, 3885, 4020, 4221, 4410, 4662, 4690, 4958, 5180, 5439, 5628, 6030, 6566, 6660, 7035, 7252, 7437, 7770, 8442, 8820, 9065, 9324, 9380, 9849, 9916, 10878, 11655, 12060, 12395, 13132, 14070, 14874, 15540, 16317, 16415, 16884, 17353, 18130, 19698, 21105, 21756, 22311, 23310, 24790, 27195, 28140, 29547, 29748, 32634, 32830, 34706, 36260, 37185, 39396, 42210, 44622, 46620, 49245, 49580, 52059, 54390, 59094, 65268, 65660, 69412, 74370, 81585, 84420, 86765, 89244, 98490, 104118, 108780, 111555, 118188, 121471, 147735, 148740, 156177, 163170, 173530, 196980, 208236, 223110, 242942, 260295, 295470, 312354, 326340, 347060, 364413, 446220, 485884, 520590, 590940, 607355, 624708, 728826, 780885, 1041180, 1093239, 1214710, 1457652, 1561770, 1822065, 2186478, 2429420, 3123540, 3644130, 4372956, 5466195, 7288260, 10932390, 21864780]

約数ペア:

[(1, 21864780), (2, 10932390), (3, 7288260), (4, 5466195), (5, 4372956), (6, 3644130), (7, 3123540), (9, 2429420), (10, 2186478), (12, 1822065), (14, 1561770), (15, 1457652), (18, 1214710), (20, 1093239), (21, 1041180), (28, 780885), (30, 728826), (35, 624708), (36, 607355), (37, 590940), (42, 520590), (45, 485884), (49, 446220), (60, 364413), (63, 347060), (67, 326340), (70, 312354), (74, 295470), (84, 260295), (90, 242942), (98, 223110), (105, 208236), (111, 196980), (126, 173530), (134, 163170), (140, 156177), (147, 148740), (148, 147735), (180, 121471), (185, 118188), (196, 111555), (201, 108780), (210, 104118), (222, 98490), (245, 89244), (252, 86765), (259, 84420), (268, 81585), (294, 74370), (315, 69412), (333, 65660), (335, 65268), (370, 59094), (402, 54390), (420, 52059), (441, 49580), (444, 49245), (469, 46620), (490, 44622), (518, 42210), (555, 39396), (588, 37185), (603, 36260), (630, 34706), (666, 32830), (670, 32634), (735, 29748), (740, 29547), (777, 28140), (804, 27195), (882, 24790), (938, 23310), (980, 22311), (1005, 21756), (1036, 21105), (1110, 19698), (1206, 18130), (1260, 17353), (1295, 16884), (1332, 16415), (1340, 16317), (1407, 15540), (1470, 14874), (1554, 14070), (1665, 13132), (1764, 12395), (1813, 12060), (1876, 11655), (2010, 10878), (2205, 9916), (2220, 9849), (2331, 9380), (2345, 9324), (2412, 9065), (2479, 8820), (2590, 8442), (2814, 7770), (2940, 7437), (3015, 7252), (3108, 7035), (3283, 6660), (3330, 6566), (3626, 6030), (3885, 5628), (4020, 5439), (4221, 5180), (4410, 4958), (4662, 4690)]