81226840

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{773}}^1$

素因数の和:892

約数の個数: 64

約数和(自身を含む): 190589760

約数和(自身を除く): 109362920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 71, 74, 142, 148, 185, 284, 296, 355, 370, 568, 710, 740, 773, 1420, 1480, 1546, 2627, 2840, 3092, 3865, 5254, 6184, 7730, 10508, 13135, 15460, 21016, 26270, 28601, 30920, 52540, 54883, 57202, 105080, 109766, 114404, 143005, 219532, 228808, 274415, 286010, 439064, 548830, 572020, 1097660, 1144040, 2030671, 2195320, 4061342, 8122684, 10153355, 16245368, 20306710, 40613420, 81226840]

約数ペア:

[(1, 81226840), (2, 40613420), (4, 20306710), (5, 16245368), (8, 10153355), (10, 8122684), (20, 4061342), (37, 2195320), (40, 2030671), (71, 1144040), (74, 1097660), (142, 572020), (148, 548830), (185, 439064), (284, 286010), (296, 274415), (355, 228808), (370, 219532), (568, 143005), (710, 114404), (740, 109766), (773, 105080), (1420, 57202), (1480, 54883), (1546, 52540), (2627, 30920), (2840, 28601), (3092, 26270), (3865, 21016), (5254, 15460), (6184, 13135), (7730, 10508)]