20980440

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4483}}^1$

素因数の和:4513

約数の個数: 96

約数和(自身を含む): 73447920

約数和(自身を除く): 52467480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4483, 4680, 8966, 13449, 17932, 22415, 26898, 35864, 40347, 44830, 53796, 58279, 67245, 80694, 89660, 107592, 116558, 134490, 161388, 174837, 179320, 201735, 233116, 268980, 291395, 322776, 349674, 403470, 466232, 524511, 537960, 582790, 699348, 806940, 874185, 1049022, 1165580, 1398696, 1613880, 1748370, 2098044, 2331160, 2622555, 3496740, 4196088, 5245110, 6993480, 10490220, 20980440]

約数ペア:

[(1, 20980440), (2, 10490220), (3, 6993480), (4, 5245110), (5, 4196088), (6, 3496740), (8, 2622555), (9, 2331160), (10, 2098044), (12, 1748370), (13, 1613880), (15, 1398696), (18, 1165580), (20, 1049022), (24, 874185), (26, 806940), (30, 699348), (36, 582790), (39, 537960), (40, 524511), (45, 466232), (52, 403470), (60, 349674), (65, 322776), (72, 291395), (78, 268980), (90, 233116), (104, 201735), (117, 179320), (120, 174837), (130, 161388), (156, 134490), (180, 116558), (195, 107592), (234, 89660), (260, 80694), (312, 67245), (360, 58279), (390, 53796), (468, 44830), (520, 40347), (585, 35864), (780, 26898), (936, 22415), (1170, 17932), (1560, 13449), (2340, 8966), (4483, 4680)]