16538740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 37134720

約数和(自身を除く): 20595980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 613, 710, 1226, 1349, 1420, 2452, 2698, 3065, 5396, 6130, 6745, 11647, 12260, 13490, 23294, 26980, 43523, 46588, 58235, 87046, 116470, 174092, 217615, 232940, 435230, 826937, 870460, 1653874, 3307748, 4134685, 8269370, 16538740]

約数ペア:

[(1, 16538740), (2, 8269370), (4, 4134685), (5, 3307748), (10, 1653874), (19, 870460), (20, 826937), (38, 435230), (71, 232940), (76, 217615), (95, 174092), (142, 116470), (190, 87046), (284, 58235), (355, 46588), (380, 43523), (613, 26980), (710, 23294), (1226, 13490), (1349, 12260), (1420, 11647), (2452, 6745), (2698, 6130), (3065, 5396)]