64639340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{761}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 141329664

約数和(自身を除く): 76690324

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 137, 155, 274, 310, 548, 620, 685, 761, 1370, 1522, 2740, 3044, 3805, 4247, 7610, 8494, 15220, 16988, 21235, 23591, 42470, 47182, 84940, 94364, 104257, 117955, 208514, 235910, 417028, 471820, 521285, 1042570, 2085140, 3231967, 6463934, 12927868, 16159835, 32319670, 64639340]

約数ペア:

[(1, 64639340), (2, 32319670), (4, 16159835), (5, 12927868), (10, 6463934), (20, 3231967), (31, 2085140), (62, 1042570), (124, 521285), (137, 471820), (155, 417028), (274, 235910), (310, 208514), (548, 117955), (620, 104257), (685, 94364), (761, 84940), (1370, 47182), (1522, 42470), (2740, 23591), (3044, 21235), (3805, 16988), (4247, 15220), (7610, 8494)]