217369520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{87649}}^1$

素因数の和:87693

約数の個数: 40

約数和(自身を含む): 521692800

約数和(自身を除く): 304323280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 87649, 175298, 350596, 438245, 701192, 876490, 1402384, 1752980, 2717119, 3505960, 5434238, 7011920, 10868476, 13585595, 21736952, 27171190, 43473904, 54342380, 108684760, 217369520]

約数ペア:

[(1, 217369520), (2, 108684760), (4, 54342380), (5, 43473904), (8, 27171190), (10, 21736952), (16, 13585595), (20, 10868476), (31, 7011920), (40, 5434238), (62, 3505960), (80, 2717119), (124, 1752980), (155, 1402384), (248, 876490), (310, 701192), (496, 438245), (620, 350596), (1240, 175298), (2480, 87649)]