21693780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{631}}^1$

素因数の和:837

約数の個数: 72

約数和(自身を含む): 66253824

約数和(自身を除く): 44560044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 191, 382, 573, 631, 764, 955, 1146, 1262, 1719, 1893, 1910, 2292, 2524, 2865, 3155, 3438, 3786, 3820, 5679, 5730, 6310, 6876, 7572, 8595, 9465, 11358, 11460, 12620, 17190, 18930, 22716, 28395, 34380, 37860, 56790, 113580, 120521, 241042, 361563, 482084, 602605, 723126, 1084689, 1205210, 1446252, 1807815, 2169378, 2410420, 3615630, 4338756, 5423445, 7231260, 10846890, 21693780]

約数ペア:

[(1, 21693780), (2, 10846890), (3, 7231260), (4, 5423445), (5, 4338756), (6, 3615630), (9, 2410420), (10, 2169378), (12, 1807815), (15, 1446252), (18, 1205210), (20, 1084689), (30, 723126), (36, 602605), (45, 482084), (60, 361563), (90, 241042), (180, 120521), (191, 113580), (382, 56790), (573, 37860), (631, 34380), (764, 28395), (955, 22716), (1146, 18930), (1262, 17190), (1719, 12620), (1893, 11460), (1910, 11358), (2292, 9465), (2524, 8595), (2865, 7572), (3155, 6876), (3438, 6310), (3786, 5730), (3820, 5679)]