21970000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^3$

素因数の和:67

約数の個数: 100

約数和(自身を含む): 57622180

約数和(自身を除く): 35652180

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 169, 200, 208, 250, 260, 325, 338, 400, 500, 520, 625, 650, 676, 845, 1000, 1040, 1250, 1300, 1352, 1625, 1690, 2000, 2197, 2500, 2600, 2704, 3250, 3380, 4225, 4394, 5000, 5200, 6500, 6760, 8125, 8450, 8788, 10000, 10985, 13000, 13520, 16250, 16900, 17576, 21125, 21970, 26000, 32500, 33800, 35152, 42250, 43940, 54925, 65000, 67600, 84500, 87880, 105625, 109850, 130000, 169000, 175760, 211250, 219700, 274625, 338000, 422500, 439400, 549250, 845000, 878800, 1098500, 1373125, 1690000, 2197000, 2746250, 4394000, 5492500, 10985000, 21970000]

約数ペア:

[(1, 21970000), (2, 10985000), (4, 5492500), (5, 4394000), (8, 2746250), (10, 2197000), (13, 1690000), (16, 1373125), (20, 1098500), (25, 878800), (26, 845000), (40, 549250), (50, 439400), (52, 422500), (65, 338000), (80, 274625), (100, 219700), (104, 211250), (125, 175760), (130, 169000), (169, 130000), (200, 109850), (208, 105625), (250, 87880), (260, 84500), (325, 67600), (338, 65000), (400, 54925), (500, 43940), (520, 42250), (625, 35152), (650, 33800), (676, 32500), (845, 26000), (1000, 21970), (1040, 21125), (1250, 17576), (1300, 16900), (1352, 16250), (1625, 13520), (1690, 13000), (2000, 10985), (2197, 10000), (2500, 8788), (2600, 8450), (2704, 8125), (3250, 6760), (3380, 6500), (4225, 5200), (4394, 5000)]