20997210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3167}}^1$

素因数の和:3207

約数の個数: 64

約数和(自身を含む): 57480192

約数和(自身を除く): 36482982

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 26, 30, 34, 39, 51, 65, 78, 85, 102, 130, 170, 195, 221, 255, 390, 442, 510, 663, 1105, 1326, 2210, 3167, 3315, 6334, 6630, 9501, 15835, 19002, 31670, 41171, 47505, 53839, 82342, 95010, 107678, 123513, 161517, 205855, 247026, 269195, 323034, 411710, 538390, 617565, 699907, 807585, 1235130, 1399814, 1615170, 2099721, 3499535, 4199442, 6999070, 10498605, 20997210]

約数ペア:

[(1, 20997210), (2, 10498605), (3, 6999070), (5, 4199442), (6, 3499535), (10, 2099721), (13, 1615170), (15, 1399814), (17, 1235130), (26, 807585), (30, 699907), (34, 617565), (39, 538390), (51, 411710), (65, 323034), (78, 269195), (85, 247026), (102, 205855), (130, 161517), (170, 123513), (195, 107678), (221, 95010), (255, 82342), (390, 53839), (442, 47505), (510, 41171), (663, 31670), (1105, 19002), (1326, 15835), (2210, 9501), (3167, 6630), (3315, 6334)]