20309900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{919}}^1$

素因数の和:963

約数の個数: 72

約数和(自身を含む): 50309280

約数和(自身を除く): 29999380

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 130, 170, 221, 260, 325, 340, 425, 442, 650, 850, 884, 919, 1105, 1300, 1700, 1838, 2210, 3676, 4420, 4595, 5525, 9190, 11050, 11947, 15623, 18380, 22100, 22975, 23894, 31246, 45950, 47788, 59735, 62492, 78115, 91900, 119470, 156230, 203099, 238940, 298675, 312460, 390575, 406198, 597350, 781150, 812396, 1015495, 1194700, 1562300, 2030990, 4061980, 5077475, 10154950, 20309900]

約数ペア:

[(1, 20309900), (2, 10154950), (4, 5077475), (5, 4061980), (10, 2030990), (13, 1562300), (17, 1194700), (20, 1015495), (25, 812396), (26, 781150), (34, 597350), (50, 406198), (52, 390575), (65, 312460), (68, 298675), (85, 238940), (100, 203099), (130, 156230), (170, 119470), (221, 91900), (260, 78115), (325, 62492), (340, 59735), (425, 47788), (442, 45950), (650, 31246), (850, 23894), (884, 22975), (919, 22100), (1105, 18380), (1300, 15623), (1700, 11947), (1838, 11050), (2210, 9190), (3676, 5525), (4420, 4595)]