20481890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{14323}}^1$

素因数の和:14354

約数の個数: 32

約数和(自身を含む): 43315776

約数和(自身を除く): 22833886

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 14323, 28646, 71615, 143230, 157553, 186199, 315106, 372398, 787765, 930995, 1575530, 1861990, 2048189, 4096378, 10240945, 20481890]

約数ペア:

[(1, 20481890), (2, 10240945), (5, 4096378), (10, 2048189), (11, 1861990), (13, 1575530), (22, 930995), (26, 787765), (55, 372398), (65, 315106), (110, 186199), (130, 157553), (143, 143230), (286, 71615), (715, 28646), (1430, 14323)]