21557484

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{631}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 59582432

約数和(自身を除く): 38024948

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 73, 78, 117, 146, 156, 219, 234, 292, 438, 468, 631, 657, 876, 949, 1262, 1314, 1893, 1898, 2524, 2628, 2847, 3786, 3796, 5679, 5694, 7572, 8203, 8541, 11358, 11388, 16406, 17082, 22716, 24609, 32812, 34164, 46063, 49218, 73827, 92126, 98436, 138189, 147654, 184252, 276378, 295308, 414567, 552756, 598819, 829134, 1197638, 1658268, 1796457, 2395276, 3592914, 5389371, 7185828, 10778742, 21557484]

約数ペア:

[(1, 21557484), (2, 10778742), (3, 7185828), (4, 5389371), (6, 3592914), (9, 2395276), (12, 1796457), (13, 1658268), (18, 1197638), (26, 829134), (36, 598819), (39, 552756), (52, 414567), (73, 295308), (78, 276378), (117, 184252), (146, 147654), (156, 138189), (219, 98436), (234, 92126), (292, 73827), (438, 49218), (468, 46063), (631, 34164), (657, 32812), (876, 24609), (949, 22716), (1262, 17082), (1314, 16406), (1893, 11388), (1898, 11358), (2524, 8541), (2628, 8203), (2847, 7572), (3786, 5694), (3796, 5679)]