19906740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 216

約数和(自身を含む): 73323432

約数和(自身を除く): 53416692

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, 61, 63, 70, 74, 84, 90, 98, 105, 111, 122, 126, 140, 147, 148, 180, 183, 185, 196, 210, 222, 244, 245, 252, 259, 294, 305, 315, 333, 366, 370, 420, 427, 441, 444, 490, 518, 549, 555, 588, 610, 630, 666, 732, 735, 740, 777, 854, 882, 915, 980, 1036, 1098, 1110, 1220, 1260, 1281, 1295, 1332, 1470, 1554, 1665, 1708, 1764, 1813, 1830, 2135, 2196, 2205, 2220, 2257, 2331, 2562, 2590, 2745, 2940, 2989, 3108, 3330, 3626, 3660, 3843, 3885, 4270, 4410, 4514, 4662, 5124, 5180, 5439, 5490, 5978, 6405, 6660, 6771, 7252, 7686, 7770, 8540, 8820, 8967, 9028, 9065, 9324, 10878, 10980, 11285, 11655, 11956, 12810, 13542, 14945, 15372, 15540, 15799, 16317, 17934, 18130, 19215, 20313, 21756, 22570, 23310, 25620, 26901, 27084, 27195, 29890, 31598, 32634, 33855, 35868, 36260, 38430, 40626, 44835, 45140, 46620, 47397, 53802, 54390, 59780, 63196, 65268, 67710, 76860, 78995, 81252, 81585, 89670, 94794, 101565, 107604, 108780, 110593, 134505, 135420, 142191, 157990, 163170, 179340, 189588, 203130, 221186, 236985, 269010, 284382, 315980, 326340, 331779, 406260, 442372, 473970, 538020, 552965, 568764, 663558, 710955, 947940, 995337, 1105930, 1327116, 1421910, 1658895, 1990674, 2211860, 2843820, 3317790, 3981348, 4976685, 6635580, 9953370, 19906740]

約数ペア:

[(1, 19906740), (2, 9953370), (3, 6635580), (4, 4976685), (5, 3981348), (6, 3317790), (7, 2843820), (9, 2211860), (10, 1990674), (12, 1658895), (14, 1421910), (15, 1327116), (18, 1105930), (20, 995337), (21, 947940), (28, 710955), (30, 663558), (35, 568764), (36, 552965), (37, 538020), (42, 473970), (45, 442372), (49, 406260), (60, 331779), (61, 326340), (63, 315980), (70, 284382), (74, 269010), (84, 236985), (90, 221186), (98, 203130), (105, 189588), (111, 179340), (122, 163170), (126, 157990), (140, 142191), (147, 135420), (148, 134505), (180, 110593), (183, 108780), (185, 107604), (196, 101565), (210, 94794), (222, 89670), (244, 81585), (245, 81252), (252, 78995), (259, 76860), (294, 67710), (305, 65268), (315, 63196), (333, 59780), (366, 54390), (370, 53802), (420, 47397), (427, 46620), (441, 45140), (444, 44835), (490, 40626), (518, 38430), (549, 36260), (555, 35868), (588, 33855), (610, 32634), (630, 31598), (666, 29890), (732, 27195), (735, 27084), (740, 26901), (777, 25620), (854, 23310), (882, 22570), (915, 21756), (980, 20313), (1036, 19215), (1098, 18130), (1110, 17934), (1220, 16317), (1260, 15799), (1281, 15540), (1295, 15372), (1332, 14945), (1470, 13542), (1554, 12810), (1665, 11956), (1708, 11655), (1764, 11285), (1813, 10980), (1830, 10878), (2135, 9324), (2196, 9065), (2205, 9028), (2220, 8967), (2257, 8820), (2331, 8540), (2562, 7770), (2590, 7686), (2745, 7252), (2940, 6771), (2989, 6660), (3108, 6405), (3330, 5978), (3626, 5490), (3660, 5439), (3843, 5180), (3885, 5124), (4270, 4662), (4410, 4514)]