20946819920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1549321}}^1$

素因数の和:1549360

約数の個数: 60

約数和(自身を含む): 52735822236

約数和(自身を除く): 31789002316

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2704, 3380, 6760, 13520, 1549321, 3098642, 6197284, 7746605, 12394568, 15493210, 20141173, 24789136, 30986420, 40282346, 61972840, 80564692, 100705865, 123945680, 161129384, 201411730, 261835249, 322258768, 402823460, 523670498, 805646920, 1047340996, 1309176245, 1611293840, 2094681992, 2618352490, 4189363984, 5236704980, 10473409960, 20946819920]

約数ペア:

[(1, 20946819920), (2, 10473409960), (4, 5236704980), (5, 4189363984), (8, 2618352490), (10, 2094681992), (13, 1611293840), (16, 1309176245), (20, 1047340996), (26, 805646920), (40, 523670498), (52, 402823460), (65, 322258768), (80, 261835249), (104, 201411730), (130, 161129384), (169, 123945680), (208, 100705865), (260, 80564692), (338, 61972840), (520, 40282346), (676, 30986420), (845, 24789136), (1040, 20141173), (1352, 15493210), (1690, 12394568), (2704, 7746605), (3380, 6197284), (6760, 3098642), (13520, 1549321)]