129278680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{761}}^1$

素因数の和:940

約数の個数: 64

約数和(自身を含む): 302849280

約数和(自身を除く): 173570600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 137, 155, 248, 274, 310, 548, 620, 685, 761, 1096, 1240, 1370, 1522, 2740, 3044, 3805, 4247, 5480, 6088, 7610, 8494, 15220, 16988, 21235, 23591, 30440, 33976, 42470, 47182, 84940, 94364, 104257, 117955, 169880, 188728, 208514, 235910, 417028, 471820, 521285, 834056, 943640, 1042570, 2085140, 3231967, 4170280, 6463934, 12927868, 16159835, 25855736, 32319670, 64639340, 129278680]

約数ペア:

[(1, 129278680), (2, 64639340), (4, 32319670), (5, 25855736), (8, 16159835), (10, 12927868), (20, 6463934), (31, 4170280), (40, 3231967), (62, 2085140), (124, 1042570), (137, 943640), (155, 834056), (248, 521285), (274, 471820), (310, 417028), (548, 235910), (620, 208514), (685, 188728), (761, 169880), (1096, 117955), (1240, 104257), (1370, 94364), (1522, 84940), (2740, 47182), (3044, 42470), (3805, 33976), (4247, 30440), (5480, 23591), (6088, 21235), (7610, 16988), (8494, 15220)]