17911980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 54722304

約数和(自身を除く): 36810324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 191, 382, 521, 573, 764, 955, 1042, 1146, 1563, 1719, 1910, 2084, 2292, 2605, 2865, 3126, 3438, 3820, 4689, 5210, 5730, 6252, 6876, 7815, 8595, 9378, 10420, 11460, 15630, 17190, 18756, 23445, 31260, 34380, 46890, 93780, 99511, 199022, 298533, 398044, 497555, 597066, 895599, 995110, 1194132, 1492665, 1791198, 1990220, 2985330, 3582396, 4477995, 5970660, 8955990, 17911980]

約数ペア:

[(1, 17911980), (2, 8955990), (3, 5970660), (4, 4477995), (5, 3582396), (6, 2985330), (9, 1990220), (10, 1791198), (12, 1492665), (15, 1194132), (18, 995110), (20, 895599), (30, 597066), (36, 497555), (45, 398044), (60, 298533), (90, 199022), (180, 99511), (191, 93780), (382, 46890), (521, 34380), (573, 31260), (764, 23445), (955, 18756), (1042, 17190), (1146, 15630), (1563, 11460), (1719, 10420), (1910, 9378), (2084, 8595), (2292, 7815), (2605, 6876), (2865, 6252), (3126, 5730), (3438, 5210), (3820, 4689)]