81818520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:657

約数の個数: 128

約数和(自身を含む): 282355200

約数和(自身を除く): 200536680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 257, 280, 379, 420, 514, 758, 771, 840, 1028, 1137, 1285, 1516, 1542, 1799, 1895, 2056, 2274, 2570, 2653, 3032, 3084, 3598, 3790, 3855, 4548, 5140, 5306, 5397, 5685, 6168, 7196, 7580, 7710, 7959, 8995, 9096, 10280, 10612, 10794, 11370, 13265, 14392, 15160, 15420, 15918, 17990, 21224, 21588, 22740, 26530, 26985, 30840, 31836, 35980, 39795, 43176, 45480, 53060, 53970, 63672, 71960, 79590, 97403, 106120, 107940, 159180, 194806, 215880, 292209, 318360, 389612, 487015, 584418, 681821, 779224, 974030, 1168836, 1363642, 1461045, 1948060, 2045463, 2337672, 2727284, 2922090, 3409105, 3896120, 4090926, 5454568, 5844180, 6818210, 8181852, 10227315, 11688360, 13636420, 16363704, 20454630, 27272840, 40909260, 81818520]

約数ペア:

[(1, 81818520), (2, 40909260), (3, 27272840), (4, 20454630), (5, 16363704), (6, 13636420), (7, 11688360), (8, 10227315), (10, 8181852), (12, 6818210), (14, 5844180), (15, 5454568), (20, 4090926), (21, 3896120), (24, 3409105), (28, 2922090), (30, 2727284), (35, 2337672), (40, 2045463), (42, 1948060), (56, 1461045), (60, 1363642), (70, 1168836), (84, 974030), (105, 779224), (120, 681821), (140, 584418), (168, 487015), (210, 389612), (257, 318360), (280, 292209), (379, 215880), (420, 194806), (514, 159180), (758, 107940), (771, 106120), (840, 97403), (1028, 79590), (1137, 71960), (1285, 63672), (1516, 53970), (1542, 53060), (1799, 45480), (1895, 43176), (2056, 39795), (2274, 35980), (2570, 31836), (2653, 30840), (3032, 26985), (3084, 26530), (3598, 22740), (3790, 21588), (3855, 21224), (4548, 17990), (5140, 15918), (5306, 15420), (5397, 15160), (5685, 14392), (6168, 13265), (7196, 11370), (7580, 10794), (7710, 10612), (7959, 10280), (8995, 9096)]