15890980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{509}}^1$

素因数の和:748

約数の個数: 48

約数和(自身を含む): 38384640

約数和(自身を除く): 22493660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 509, 892, 1018, 1115, 1561, 2036, 2230, 2545, 3122, 3563, 4460, 5090, 6244, 7126, 7805, 10180, 14252, 15610, 17815, 31220, 35630, 71260, 113507, 227014, 454028, 567535, 794549, 1135070, 1589098, 2270140, 3178196, 3972745, 7945490, 15890980]

約数ペア:

[(1, 15890980), (2, 7945490), (4, 3972745), (5, 3178196), (7, 2270140), (10, 1589098), (14, 1135070), (20, 794549), (28, 567535), (35, 454028), (70, 227014), (140, 113507), (223, 71260), (446, 35630), (509, 31220), (892, 17815), (1018, 15610), (1115, 14252), (1561, 10180), (2036, 7805), (2230, 7126), (2545, 6244), (3122, 5090), (3563, 4460)]