21813558

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:437

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 28989642

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 41, 57, 78, 82, 114, 123, 246, 247, 359, 494, 533, 718, 741, 779, 1066, 1077, 1482, 1558, 1599, 2154, 2337, 3198, 4667, 4674, 6821, 9334, 10127, 13642, 14001, 14719, 20254, 20463, 28002, 29438, 30381, 40926, 44157, 60762, 88314, 88673, 177346, 191347, 266019, 279661, 382694, 532038, 559322, 574041, 838983, 1148082, 1677966, 3635593, 7271186, 10906779, 21813558]

約数ペア:

[(1, 21813558), (2, 10906779), (3, 7271186), (6, 3635593), (13, 1677966), (19, 1148082), (26, 838983), (38, 574041), (39, 559322), (41, 532038), (57, 382694), (78, 279661), (82, 266019), (114, 191347), (123, 177346), (246, 88673), (247, 88314), (359, 60762), (494, 44157), (533, 40926), (718, 30381), (741, 29438), (779, 28002), (1066, 20463), (1077, 20254), (1482, 14719), (1558, 14001), (1599, 13642), (2154, 10127), (2337, 9334), (3198, 6821), (4667, 4674)]