20787720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{821}}^1$

素因数の和:1046

約数の個数: 64

約数和(自身を含む): 62735040

約数和(自身を除く): 41947320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 211, 422, 633, 821, 844, 1055, 1266, 1642, 1688, 2110, 2463, 2532, 3165, 3284, 4105, 4220, 4926, 5064, 6330, 6568, 8210, 8440, 9852, 12315, 12660, 16420, 19704, 24630, 25320, 32840, 49260, 98520, 173231, 346462, 519693, 692924, 866155, 1039386, 1385848, 1732310, 2078772, 2598465, 3464620, 4157544, 5196930, 6929240, 10393860, 20787720]

約数ペア:

[(1, 20787720), (2, 10393860), (3, 6929240), (4, 5196930), (5, 4157544), (6, 3464620), (8, 2598465), (10, 2078772), (12, 1732310), (15, 1385848), (20, 1039386), (24, 866155), (30, 692924), (40, 519693), (60, 346462), (120, 173231), (211, 98520), (422, 49260), (633, 32840), (821, 25320), (844, 24630), (1055, 19704), (1266, 16420), (1642, 12660), (1688, 12315), (2110, 9852), (2463, 8440), (2532, 8210), (3165, 6568), (3284, 6330), (4105, 5064), (4220, 4926)]