21807890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{739}}^1$

素因数の和:986

約数の個数: 32

約数和(自身を含む): 42517440

約数和(自身を除く): 20709550

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 227, 454, 739, 1135, 1478, 2270, 2951, 3695, 5902, 7390, 9607, 14755, 19214, 29510, 48035, 96070, 167753, 335506, 838765, 1677530, 2180789, 4361578, 10903945, 21807890]

約数ペア:

[(1, 21807890), (2, 10903945), (5, 4361578), (10, 2180789), (13, 1677530), (26, 838765), (65, 335506), (130, 167753), (227, 96070), (454, 48035), (739, 29510), (1135, 19214), (1478, 14755), (2270, 9607), (2951, 7390), (3695, 5902)]