18965940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6451}}^1$

素因数の和:6477

約数の個数: 72

約数和(自身を含む): 61784352

約数和(自身を除く): 42818412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6451, 12902, 19353, 25804, 32255, 38706, 45157, 64510, 77412, 90314, 96765, 129020, 135471, 180628, 193530, 225785, 270942, 316099, 387060, 451570, 541884, 632198, 677355, 903140, 948297, 1264396, 1354710, 1580495, 1896594, 2709420, 3160990, 3793188, 4741485, 6321980, 9482970, 18965940]

約数ペア:

[(1, 18965940), (2, 9482970), (3, 6321980), (4, 4741485), (5, 3793188), (6, 3160990), (7, 2709420), (10, 1896594), (12, 1580495), (14, 1354710), (15, 1264396), (20, 948297), (21, 903140), (28, 677355), (30, 632198), (35, 541884), (42, 451570), (49, 387060), (60, 316099), (70, 270942), (84, 225785), (98, 193530), (105, 180628), (140, 135471), (147, 129020), (196, 96765), (210, 90314), (245, 77412), (294, 64510), (420, 45157), (490, 38706), (588, 32255), (735, 25804), (980, 19353), (1470, 12902), (2940, 6451)]