28754180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 78963696

約数和(自身を除く): 50209516

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 37, 49, 52, 61, 65, 70, 74, 91, 98, 122, 130, 140, 148, 182, 185, 196, 244, 245, 259, 260, 305, 364, 370, 427, 455, 481, 490, 518, 610, 637, 740, 793, 854, 910, 962, 980, 1036, 1220, 1274, 1295, 1586, 1708, 1813, 1820, 1924, 2135, 2257, 2405, 2548, 2590, 2989, 3172, 3185, 3367, 3626, 3965, 4270, 4514, 4810, 5180, 5551, 5978, 6370, 6734, 7252, 7930, 8540, 9028, 9065, 9620, 11102, 11285, 11956, 12740, 13468, 14945, 15799, 15860, 16835, 18130, 22204, 22570, 23569, 27755, 29341, 29890, 31598, 33670, 36260, 38857, 45140, 47138, 55510, 58682, 59780, 63196, 67340, 77714, 78995, 94276, 110593, 111020, 117364, 117845, 146705, 155428, 157990, 194285, 205387, 221186, 235690, 293410, 315980, 388570, 410774, 442372, 471380, 552965, 586820, 777140, 821548, 1026935, 1105930, 1437709, 2053870, 2211860, 2875418, 4107740, 5750836, 7188545, 14377090, 28754180]

約数ペア:

[(1, 28754180), (2, 14377090), (4, 7188545), (5, 5750836), (7, 4107740), (10, 2875418), (13, 2211860), (14, 2053870), (20, 1437709), (26, 1105930), (28, 1026935), (35, 821548), (37, 777140), (49, 586820), (52, 552965), (61, 471380), (65, 442372), (70, 410774), (74, 388570), (91, 315980), (98, 293410), (122, 235690), (130, 221186), (140, 205387), (148, 194285), (182, 157990), (185, 155428), (196, 146705), (244, 117845), (245, 117364), (259, 111020), (260, 110593), (305, 94276), (364, 78995), (370, 77714), (427, 67340), (455, 63196), (481, 59780), (490, 58682), (518, 55510), (610, 47138), (637, 45140), (740, 38857), (793, 36260), (854, 33670), (910, 31598), (962, 29890), (980, 29341), (1036, 27755), (1220, 23569), (1274, 22570), (1295, 22204), (1586, 18130), (1708, 16835), (1813, 15860), (1820, 15799), (1924, 14945), (2135, 13468), (2257, 12740), (2405, 11956), (2548, 11285), (2590, 11102), (2989, 9620), (3172, 9065), (3185, 9028), (3367, 8540), (3626, 7930), (3965, 7252), (4270, 6734), (4514, 6370), (4810, 5978), (5180, 5551)]