21158670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{239}}^1$

素因数の和:489

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 33999090

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 227, 239, 390, 454, 478, 681, 717, 1135, 1195, 1362, 1434, 2270, 2390, 2951, 3107, 3405, 3585, 5902, 6214, 6810, 7170, 8853, 9321, 14755, 15535, 17706, 18642, 29510, 31070, 44265, 46605, 54253, 88530, 93210, 108506, 162759, 271265, 325518, 542530, 705289, 813795, 1410578, 1627590, 2115867, 3526445, 4231734, 7052890, 10579335, 21158670]

約数ペア:

[(1, 21158670), (2, 10579335), (3, 7052890), (5, 4231734), (6, 3526445), (10, 2115867), (13, 1627590), (15, 1410578), (26, 813795), (30, 705289), (39, 542530), (65, 325518), (78, 271265), (130, 162759), (195, 108506), (227, 93210), (239, 88530), (390, 54253), (454, 46605), (478, 44265), (681, 31070), (717, 29510), (1135, 18642), (1195, 17706), (1362, 15535), (1434, 14755), (2270, 9321), (2390, 8853), (2951, 7170), (3107, 6810), (3405, 6214), (3585, 5902)]