21871950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{3391}}^1$

素因数の和:3449

約数の個数: 48

約数和(自身を含む): 55520256

約数和(自身を除く): 33648306

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 86, 129, 150, 215, 258, 430, 645, 1075, 1290, 2150, 3225, 3391, 6450, 6782, 10173, 16955, 20346, 33910, 50865, 84775, 101730, 145813, 169550, 254325, 291626, 437439, 508650, 729065, 874878, 1458130, 2187195, 3645325, 4374390, 7290650, 10935975, 21871950]

約数ペア:

[(1, 21871950), (2, 10935975), (3, 7290650), (5, 4374390), (6, 3645325), (10, 2187195), (15, 1458130), (25, 874878), (30, 729065), (43, 508650), (50, 437439), (75, 291626), (86, 254325), (129, 169550), (150, 145813), (215, 101730), (258, 84775), (430, 50865), (645, 33910), (1075, 20346), (1290, 16955), (2150, 10173), (3225, 6782), (3391, 6450)]