2560740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:106

約数の個数: 144

約数和(自身を含む): 9116352

約数和(自身を除く): 6555612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 67, 70, 78, 84, 91, 98, 105, 130, 134, 140, 147, 156, 182, 195, 196, 201, 210, 245, 260, 268, 273, 294, 335, 364, 390, 402, 420, 455, 469, 490, 546, 588, 637, 670, 735, 780, 804, 871, 910, 938, 980, 1005, 1092, 1274, 1340, 1365, 1407, 1470, 1742, 1820, 1876, 1911, 2010, 2345, 2548, 2613, 2730, 2814, 2940, 3185, 3283, 3484, 3822, 4020, 4355, 4690, 5226, 5460, 5628, 6097, 6370, 6566, 7035, 7644, 8710, 9380, 9555, 9849, 10452, 12194, 12740, 13065, 13132, 14070, 16415, 17420, 18291, 19110, 19698, 24388, 26130, 28140, 30485, 32830, 36582, 38220, 39396, 42679, 49245, 52260, 60970, 65660, 73164, 85358, 91455, 98490, 121940, 128037, 170716, 182910, 196980, 213395, 256074, 365820, 426790, 512148, 640185, 853580, 1280370, 2560740]

約数ペア:

[(1, 2560740), (2, 1280370), (3, 853580), (4, 640185), (5, 512148), (6, 426790), (7, 365820), (10, 256074), (12, 213395), (13, 196980), (14, 182910), (15, 170716), (20, 128037), (21, 121940), (26, 98490), (28, 91455), (30, 85358), (35, 73164), (39, 65660), (42, 60970), (49, 52260), (52, 49245), (60, 42679), (65, 39396), (67, 38220), (70, 36582), (78, 32830), (84, 30485), (91, 28140), (98, 26130), (105, 24388), (130, 19698), (134, 19110), (140, 18291), (147, 17420), (156, 16415), (182, 14070), (195, 13132), (196, 13065), (201, 12740), (210, 12194), (245, 10452), (260, 9849), (268, 9555), (273, 9380), (294, 8710), (335, 7644), (364, 7035), (390, 6566), (402, 6370), (420, 6097), (455, 5628), (469, 5460), (490, 5226), (546, 4690), (588, 4355), (637, 4020), (670, 3822), (735, 3484), (780, 3283), (804, 3185), (871, 2940), (910, 2814), (938, 2730), (980, 2613), (1005, 2548), (1092, 2345), (1274, 2010), (1340, 1911), (1365, 1876), (1407, 1820), (1470, 1742)]