81770440

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{6977}}^1$

素因数の和:7281

約数の個数: 32

約数和(自身を含む): 184637880

約数和(自身を除く): 102867440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 2344, 2930, 5860, 6977, 11720, 13954, 27908, 34885, 55816, 69770, 139540, 279080, 2044261, 4088522, 8177044, 10221305, 16354088, 20442610, 40885220, 81770440]

約数ペア:

[(1, 81770440), (2, 40885220), (4, 20442610), (5, 16354088), (8, 10221305), (10, 8177044), (20, 4088522), (40, 2044261), (293, 279080), (586, 139540), (1172, 69770), (1465, 55816), (2344, 34885), (2930, 27908), (5860, 13954), (6977, 11720)]