64221220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{709}}^1$

素因数の和:1372

約数の個数: 48

約数和(自身を含む): 154586880

約数和(自身を除く): 90365660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 647, 709, 1294, 1418, 2588, 2836, 3235, 3545, 4529, 4963, 6470, 7090, 9058, 9926, 12940, 14180, 18116, 19852, 22645, 24815, 45290, 49630, 90580, 99260, 458723, 917446, 1834892, 2293615, 3211061, 4587230, 6422122, 9174460, 12844244, 16055305, 32110610, 64221220]

約数ペア:

[(1, 64221220), (2, 32110610), (4, 16055305), (5, 12844244), (7, 9174460), (10, 6422122), (14, 4587230), (20, 3211061), (28, 2293615), (35, 1834892), (70, 917446), (140, 458723), (647, 99260), (709, 90580), (1294, 49630), (1418, 45290), (2588, 24815), (2836, 22645), (3235, 19852), (3545, 18116), (4529, 14180), (4963, 12940), (6470, 9926), (7090, 9058)]