90705680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{6709}}^1$

素因数の和:6748

約数の個数: 60

約数和(自身を含む): 228394980

約数和(自身を除く): 137689300

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, 6709, 6760, 13418, 13520, 26836, 33545, 53672, 67090, 87217, 107344, 134180, 174434, 268360, 348868, 436085, 536720, 697736, 872170, 1133821, 1395472, 1744340, 2267642, 3488680, 4535284, 5669105, 6977360, 9070568, 11338210, 18141136, 22676420, 45352840, 90705680]

約数ペア:

[(1, 90705680), (2, 45352840), (4, 22676420), (5, 18141136), (8, 11338210), (10, 9070568), (13, 6977360), (16, 5669105), (20, 4535284), (26, 3488680), (40, 2267642), (52, 1744340), (65, 1395472), (80, 1133821), (104, 872170), (130, 697736), (169, 536720), (208, 436085), (260, 348868), (338, 268360), (520, 174434), (676, 134180), (845, 107344), (1040, 87217), (1352, 67090), (1690, 53672), (2704, 33545), (3380, 26836), (6709, 13520), (6760, 13418)]