21983720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2939}}^1$

素因数の和:2978

約数の個数: 64

約数和(自身を含む): 57153600

約数和(自身を除く): 35169880

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2939, 3740, 5878, 7480, 11756, 14695, 23512, 29390, 32329, 49963, 58780, 64658, 99926, 117560, 129316, 161645, 199852, 249815, 258632, 323290, 399704, 499630, 549593, 646580, 999260, 1099186, 1293160, 1998520, 2198372, 2747965, 4396744, 5495930, 10991860, 21983720]

約数ペア:

[(1, 21983720), (2, 10991860), (4, 5495930), (5, 4396744), (8, 2747965), (10, 2198372), (11, 1998520), (17, 1293160), (20, 1099186), (22, 999260), (34, 646580), (40, 549593), (44, 499630), (55, 399704), (68, 323290), (85, 258632), (88, 249815), (110, 199852), (136, 161645), (170, 129316), (187, 117560), (220, 99926), (340, 64658), (374, 58780), (440, 49963), (680, 32329), (748, 29390), (935, 23512), (1496, 14695), (1870, 11756), (2939, 7480), (3740, 5878)]