31347580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1601}}^1$

素因数の和:1710

約数の個数: 48

約数和(自身を含む): 72666720

約数和(自身を除く): 41319140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1601, 1780, 1958, 3202, 3916, 4895, 6404, 8005, 9790, 16010, 17611, 19580, 32020, 35222, 70444, 88055, 142489, 176110, 284978, 352220, 569956, 712445, 1424890, 1567379, 2849780, 3134758, 6269516, 7836895, 15673790, 31347580]

約数ペア:

[(1, 31347580), (2, 15673790), (4, 7836895), (5, 6269516), (10, 3134758), (11, 2849780), (20, 1567379), (22, 1424890), (44, 712445), (55, 569956), (89, 352220), (110, 284978), (178, 176110), (220, 142489), (356, 88055), (445, 70444), (890, 35222), (979, 32020), (1601, 19580), (1780, 17611), (1958, 16010), (3202, 9790), (3916, 8005), (4895, 6404)]