64455220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2389}}^1$

素因数の和:2488

約数の個数: 48

約数和(自身を含む): 144547200

約数和(自身を除く): 80091980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 710, 1349, 1420, 2389, 2698, 4778, 5396, 6745, 9556, 11945, 13490, 23890, 26980, 45391, 47780, 90782, 169619, 181564, 226955, 339238, 453910, 678476, 848095, 907820, 1696190, 3222761, 3392380, 6445522, 12891044, 16113805, 32227610, 64455220]

約数ペア:

[(1, 64455220), (2, 32227610), (4, 16113805), (5, 12891044), (10, 6445522), (19, 3392380), (20, 3222761), (38, 1696190), (71, 907820), (76, 848095), (95, 678476), (142, 453910), (190, 339238), (284, 226955), (355, 181564), (380, 169619), (710, 90782), (1349, 47780), (1420, 45391), (2389, 26980), (2698, 23890), (4778, 13490), (5396, 11945), (6745, 9556)]