20955100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 49215600

約数和(自身を除く): 28260500

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 41, 50, 76, 82, 95, 100, 164, 190, 205, 269, 380, 410, 475, 538, 779, 820, 950, 1025, 1076, 1345, 1558, 1900, 2050, 2690, 3116, 3895, 4100, 5111, 5380, 6725, 7790, 10222, 11029, 13450, 15580, 19475, 20444, 22058, 25555, 26900, 38950, 44116, 51110, 55145, 77900, 102220, 110290, 127775, 209551, 220580, 255550, 275725, 419102, 511100, 551450, 838204, 1047755, 1102900, 2095510, 4191020, 5238775, 10477550, 20955100]

約数ペア:

[(1, 20955100), (2, 10477550), (4, 5238775), (5, 4191020), (10, 2095510), (19, 1102900), (20, 1047755), (25, 838204), (38, 551450), (41, 511100), (50, 419102), (76, 275725), (82, 255550), (95, 220580), (100, 209551), (164, 127775), (190, 110290), (205, 102220), (269, 77900), (380, 55145), (410, 51110), (475, 44116), (538, 38950), (779, 26900), (820, 25555), (950, 22058), (1025, 20444), (1076, 19475), (1345, 15580), (1558, 13450), (1900, 11029), (2050, 10222), (2690, 7790), (3116, 6725), (3895, 5380), (4100, 5111)]