401027720

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1\times {\mathrm{677}}^1$

素因数の和:998

約数の個数: 64

約数和(自身を含む): 922622400

約数和(自身を除く): 521594680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 251, 295, 472, 502, 590, 677, 1004, 1180, 1255, 1354, 2008, 2360, 2510, 2708, 3385, 5020, 5416, 6770, 10040, 13540, 14809, 27080, 29618, 39943, 59236, 74045, 79886, 118472, 148090, 159772, 169927, 199715, 296180, 319544, 339854, 399430, 592360, 679708, 798860, 849635, 1359416, 1597720, 1699270, 3398540, 6797080, 10025693, 20051386, 40102772, 50128465, 80205544, 100256930, 200513860, 401027720]

約数ペア:

[(1, 401027720), (2, 200513860), (4, 100256930), (5, 80205544), (8, 50128465), (10, 40102772), (20, 20051386), (40, 10025693), (59, 6797080), (118, 3398540), (236, 1699270), (251, 1597720), (295, 1359416), (472, 849635), (502, 798860), (590, 679708), (677, 592360), (1004, 399430), (1180, 339854), (1255, 319544), (1354, 296180), (2008, 199715), (2360, 169927), (2510, 159772), (2708, 148090), (3385, 118472), (5020, 79886), (5416, 74045), (6770, 59236), (10040, 39943), (13540, 29618), (14809, 27080)]