20255920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8731}}^1$

素因数の和:8773

約数の個数: 40

約数和(自身を含む): 48724560

約数和(自身を除く): 28468640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8731, 17462, 34924, 43655, 69848, 87310, 139696, 174620, 253199, 349240, 506398, 698480, 1012796, 1265995, 2025592, 2531990, 4051184, 5063980, 10127960, 20255920]

約数ペア:

[(1, 20255920), (2, 10127960), (4, 5063980), (5, 4051184), (8, 2531990), (10, 2025592), (16, 1265995), (20, 1012796), (29, 698480), (40, 506398), (58, 349240), (80, 253199), (116, 174620), (145, 139696), (232, 87310), (290, 69848), (464, 43655), (580, 34924), (1160, 17462), (2320, 8731)]