31139320

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8747}}^1$

素因数の和:8847

約数の個数: 32

約数和(自身を含む): 70858800

約数和(自身を除く): 39719480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8747, 17494, 34988, 43735, 69976, 87470, 174940, 349880, 778483, 1556966, 3113932, 3892415, 6227864, 7784830, 15569660, 31139320]

約数ペア:

[(1, 31139320), (2, 15569660), (4, 7784830), (5, 6227864), (8, 3892415), (10, 3113932), (20, 1556966), (40, 778483), (89, 349880), (178, 174940), (356, 87470), (445, 69976), (712, 43735), (890, 34988), (1780, 17494), (3560, 8747)]