20919641640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{66361}}^1$

素因数の和:66483

約数の個数: 128

約数和(自身を含む): 65363915520

約数和(自身を除く): 44444273880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 71, 74, 111, 120, 142, 148, 185, 213, 222, 284, 296, 355, 370, 426, 444, 555, 568, 710, 740, 852, 888, 1065, 1110, 1420, 1480, 1704, 2130, 2220, 2627, 2840, 4260, 4440, 5254, 7881, 8520, 10508, 13135, 15762, 21016, 26270, 31524, 39405, 52540, 63048, 66361, 78810, 105080, 132722, 157620, 199083, 265444, 315240, 331805, 398166, 530888, 663610, 796332, 995415, 1327220, 1592664, 1990830, 2455357, 2654440, 3981660, 4711631, 4910714, 7366071, 7963320, 9423262, 9821428, 12276785, 14134893, 14732142, 18846524, 19642856, 23558155, 24553570, 28269786, 29464284, 36830355, 37693048, 47116310, 49107140, 56539572, 58928568, 70674465, 73660710, 94232620, 98214280, 113079144, 141348930, 147321420, 174330347, 188465240, 282697860, 294642840, 348660694, 522991041, 565395720, 697321388, 871651735, 1045982082, 1394642776, 1743303470, 2091964164, 2614955205, 3486606940, 4183928328, 5229910410, 6973213880, 10459820820, 20919641640]

約数ペア:

[(1, 20919641640), (2, 10459820820), (3, 6973213880), (4, 5229910410), (5, 4183928328), (6, 3486606940), (8, 2614955205), (10, 2091964164), (12, 1743303470), (15, 1394642776), (20, 1045982082), (24, 871651735), (30, 697321388), (37, 565395720), (40, 522991041), (60, 348660694), (71, 294642840), (74, 282697860), (111, 188465240), (120, 174330347), (142, 147321420), (148, 141348930), (185, 113079144), (213, 98214280), (222, 94232620), (284, 73660710), (296, 70674465), (355, 58928568), (370, 56539572), (426, 49107140), (444, 47116310), (555, 37693048), (568, 36830355), (710, 29464284), (740, 28269786), (852, 24553570), (888, 23558155), (1065, 19642856), (1110, 18846524), (1420, 14732142), (1480, 14134893), (1704, 12276785), (2130, 9821428), (2220, 9423262), (2627, 7963320), (2840, 7366071), (4260, 4910714), (4440, 4711631), (5254, 3981660), (7881, 2654440), (8520, 2455357), (10508, 1990830), (13135, 1592664), (15762, 1327220), (21016, 995415), (26270, 796332), (31524, 663610), (39405, 530888), (52540, 398166), (63048, 331805), (66361, 315240), (78810, 265444), (105080, 199083), (132722, 157620)]