20195500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:284

約数の個数: 72

約数和(自身を含む): 47960640

約数和(自身を除く): 27765140

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 169, 239, 250, 260, 325, 338, 478, 500, 650, 676, 845, 956, 1195, 1300, 1625, 1690, 2390, 3107, 3250, 3380, 4225, 4780, 5975, 6214, 6500, 8450, 11950, 12428, 15535, 16900, 21125, 23900, 29875, 31070, 40391, 42250, 59750, 62140, 77675, 80782, 84500, 119500, 155350, 161564, 201955, 310700, 388375, 403910, 776750, 807820, 1009775, 1553500, 2019550, 4039100, 5048875, 10097750, 20195500]

約数ペア:

[(1, 20195500), (2, 10097750), (4, 5048875), (5, 4039100), (10, 2019550), (13, 1553500), (20, 1009775), (25, 807820), (26, 776750), (50, 403910), (52, 388375), (65, 310700), (100, 201955), (125, 161564), (130, 155350), (169, 119500), (239, 84500), (250, 80782), (260, 77675), (325, 62140), (338, 59750), (478, 42250), (500, 40391), (650, 31070), (676, 29875), (845, 23900), (956, 21125), (1195, 16900), (1300, 15535), (1625, 12428), (1690, 11950), (2390, 8450), (3107, 6500), (3250, 6214), (3380, 5975), (4225, 4780)]