21021444

素因数分解:

$2^2\times 3^{10}\times {\mathrm{89}}^1$

素因数の和:123

約数の個数: 66

約数和(自身を含む): 55800990

約数和(自身を除く): 34779546

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 89, 108, 162, 178, 243, 267, 324, 356, 486, 534, 729, 801, 972, 1068, 1458, 1602, 2187, 2403, 2916, 3204, 4374, 4806, 6561, 7209, 8748, 9612, 13122, 14418, 19683, 21627, 26244, 28836, 39366, 43254, 59049, 64881, 78732, 86508, 118098, 129762, 194643, 236196, 259524, 389286, 583929, 778572, 1167858, 1751787, 2335716, 3503574, 5255361, 7007148, 10510722, 21021444]

約数ペア:

[(1, 21021444), (2, 10510722), (3, 7007148), (4, 5255361), (6, 3503574), (9, 2335716), (12, 1751787), (18, 1167858), (27, 778572), (36, 583929), (54, 389286), (81, 259524), (89, 236196), (108, 194643), (162, 129762), (178, 118098), (243, 86508), (267, 78732), (324, 64881), (356, 59049), (486, 43254), (534, 39366), (729, 28836), (801, 26244), (972, 21627), (1068, 19683), (1458, 14418), (1602, 13122), (2187, 9612), (2403, 8748), (2916, 7209), (3204, 6561), (4374, 4806)]