15207980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 34728960

約数和(自身を除く): 19520980

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1291, 2356, 2582, 2945, 5164, 5890, 6455, 11780, 12910, 24529, 25820, 40021, 49058, 80042, 98116, 122645, 160084, 200105, 245290, 400210, 490580, 760399, 800420, 1520798, 3041596, 3801995, 7603990, 15207980]

約数ペア:

[(1, 15207980), (2, 7603990), (4, 3801995), (5, 3041596), (10, 1520798), (19, 800420), (20, 760399), (31, 490580), (38, 400210), (62, 245290), (76, 200105), (95, 160084), (124, 122645), (155, 98116), (190, 80042), (310, 49058), (380, 40021), (589, 25820), (620, 24529), (1178, 12910), (1291, 11780), (2356, 6455), (2582, 5890), (2945, 5164)]