21597420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27689}}^1$

素因数の和:27714

約数の個数: 48

約数和(自身を含む): 65126880

約数和(自身を除く): 43529460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27689, 55378, 83067, 110756, 138445, 166134, 276890, 332268, 359957, 415335, 553780, 719914, 830670, 1079871, 1439828, 1661340, 1799785, 2159742, 3599570, 4319484, 5399355, 7199140, 10798710, 21597420]

約数ペア:

[(1, 21597420), (2, 10798710), (3, 7199140), (4, 5399355), (5, 4319484), (6, 3599570), (10, 2159742), (12, 1799785), (13, 1661340), (15, 1439828), (20, 1079871), (26, 830670), (30, 719914), (39, 553780), (52, 415335), (60, 359957), (65, 332268), (78, 276890), (130, 166134), (156, 138445), (195, 110756), (260, 83067), (390, 55378), (780, 27689)]