64538500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{9929}}^1$

素因数の和:9961

約数の個数: 48

約数和(自身を含む): 151809840

約数和(自身を除く): 87271340

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 9929, 19858, 39716, 49645, 99290, 129077, 198580, 248225, 258154, 496450, 516308, 645385, 992900, 1241125, 1290770, 2482250, 2581540, 3226925, 4964500, 6453850, 12907700, 16134625, 32269250, 64538500]

約数ペア:

[(1, 64538500), (2, 32269250), (4, 16134625), (5, 12907700), (10, 6453850), (13, 4964500), (20, 3226925), (25, 2581540), (26, 2482250), (50, 1290770), (52, 1241125), (65, 992900), (100, 645385), (125, 516308), (130, 496450), (250, 258154), (260, 248225), (325, 198580), (500, 129077), (650, 99290), (1300, 49645), (1625, 39716), (3250, 19858), (6500, 9929)]