21066228

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 55449576

約数和(自身を除く): 34383348

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 61, 106, 122, 159, 181, 183, 212, 244, 318, 362, 366, 477, 543, 549, 636, 724, 732, 954, 1086, 1098, 1629, 1908, 2172, 2196, 3233, 3258, 6466, 6516, 9593, 9699, 11041, 12932, 19186, 19398, 22082, 28779, 29097, 33123, 38372, 38796, 44164, 57558, 58194, 66246, 86337, 99369, 115116, 116388, 132492, 172674, 198738, 345348, 397476, 585173, 1170346, 1755519, 2340692, 3511038, 5266557, 7022076, 10533114, 21066228]

約数ペア:

[(1, 21066228), (2, 10533114), (3, 7022076), (4, 5266557), (6, 3511038), (9, 2340692), (12, 1755519), (18, 1170346), (36, 585173), (53, 397476), (61, 345348), (106, 198738), (122, 172674), (159, 132492), (181, 116388), (183, 115116), (212, 99369), (244, 86337), (318, 66246), (362, 58194), (366, 57558), (477, 44164), (543, 38796), (549, 38372), (636, 33123), (724, 29097), (732, 28779), (954, 22082), (1086, 19398), (1098, 19186), (1629, 12932), (1908, 11041), (2172, 9699), (2196, 9593), (3233, 6516), (3258, 6466)]