21863205

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:331

約数の個数: 96

約数和(自身を含む): 49271040

約数和(自身を除く): 27407835

約数列:

[1, 3, 5, 7, 9, 13, 15, 19, 21, 35, 39, 45, 57, 63, 65, 91, 95, 105, 117, 133, 171, 195, 247, 273, 281, 285, 315, 399, 455, 585, 665, 741, 819, 843, 855, 1197, 1235, 1365, 1405, 1729, 1967, 1995, 2223, 2529, 3653, 3705, 4095, 4215, 5187, 5339, 5901, 5985, 8645, 9835, 10959, 11115, 12645, 15561, 16017, 17703, 18265, 25571, 25935, 26695, 29505, 32877, 37373, 48051, 54795, 69407, 76713, 77805, 80085, 88515, 112119, 127855, 164385, 186865, 208221, 230139, 240255, 336357, 347035, 383565, 485849, 560595, 624663, 1041105, 1150695, 1457547, 1681785, 2429245, 3123315, 4372641, 7287735, 21863205]

約数ペア:

[(1, 21863205), (3, 7287735), (5, 4372641), (7, 3123315), (9, 2429245), (13, 1681785), (15, 1457547), (19, 1150695), (21, 1041105), (35, 624663), (39, 560595), (45, 485849), (57, 383565), (63, 347035), (65, 336357), (91, 240255), (95, 230139), (105, 208221), (117, 186865), (133, 164385), (171, 127855), (195, 112119), (247, 88515), (273, 80085), (281, 77805), (285, 76713), (315, 69407), (399, 54795), (455, 48051), (585, 37373), (665, 32877), (741, 29505), (819, 26695), (843, 25935), (855, 25571), (1197, 18265), (1235, 17703), (1365, 16017), (1405, 15561), (1729, 12645), (1967, 11115), (1995, 10959), (2223, 9835), (2529, 8645), (3653, 5985), (3705, 5901), (4095, 5339), (4215, 5187)]