400351250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:453

約数の個数: 80

約数和(自身を含む): 821886912

約数和(自身を除く): 421535662

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 71, 125, 130, 142, 250, 325, 347, 355, 625, 650, 694, 710, 923, 1250, 1625, 1735, 1775, 1846, 3250, 3470, 3550, 4511, 4615, 8125, 8675, 8875, 9022, 9230, 16250, 17350, 17750, 22555, 23075, 24637, 43375, 44375, 45110, 46150, 49274, 86750, 88750, 112775, 115375, 123185, 216875, 225550, 230750, 246370, 320281, 433750, 563875, 576875, 615925, 640562, 1127750, 1153750, 1231850, 1601405, 2819375, 3079625, 3202810, 5638750, 6159250, 8007025, 15398125, 16014050, 30796250, 40035125, 80070250, 200175625, 400351250]

約数ペア:

[(1, 400351250), (2, 200175625), (5, 80070250), (10, 40035125), (13, 30796250), (25, 16014050), (26, 15398125), (50, 8007025), (65, 6159250), (71, 5638750), (125, 3202810), (130, 3079625), (142, 2819375), (250, 1601405), (325, 1231850), (347, 1153750), (355, 1127750), (625, 640562), (650, 615925), (694, 576875), (710, 563875), (923, 433750), (1250, 320281), (1625, 246370), (1735, 230750), (1775, 225550), (1846, 216875), (3250, 123185), (3470, 115375), (3550, 112775), (4511, 88750), (4615, 86750), (8125, 49274), (8675, 46150), (8875, 45110), (9022, 44375), (9230, 43375), (16250, 24637), (17350, 23075), (17750, 22555)]