20699100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:340

約数の個数: 108

約数和(自身を含む): 65785720

約数和(自身を除く): 45086620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 109, 150, 180, 211, 218, 225, 300, 327, 422, 436, 450, 545, 633, 654, 844, 900, 981, 1055, 1090, 1266, 1308, 1635, 1899, 1962, 2110, 2180, 2532, 2725, 3165, 3270, 3798, 3924, 4220, 4905, 5275, 5450, 6330, 6540, 7596, 8175, 9495, 9810, 10550, 10900, 12660, 15825, 16350, 18990, 19620, 21100, 22999, 24525, 31650, 32700, 37980, 45998, 47475, 49050, 63300, 68997, 91996, 94950, 98100, 114995, 137994, 189900, 206991, 229990, 275988, 344985, 413982, 459980, 574975, 689970, 827964, 1034955, 1149950, 1379940, 1724925, 2069910, 2299900, 3449850, 4139820, 5174775, 6899700, 10349550, 20699100]

約数ペア:

[(1, 20699100), (2, 10349550), (3, 6899700), (4, 5174775), (5, 4139820), (6, 3449850), (9, 2299900), (10, 2069910), (12, 1724925), (15, 1379940), (18, 1149950), (20, 1034955), (25, 827964), (30, 689970), (36, 574975), (45, 459980), (50, 413982), (60, 344985), (75, 275988), (90, 229990), (100, 206991), (109, 189900), (150, 137994), (180, 114995), (211, 98100), (218, 94950), (225, 91996), (300, 68997), (327, 63300), (422, 49050), (436, 47475), (450, 45998), (545, 37980), (633, 32700), (654, 31650), (844, 24525), (900, 22999), (981, 21100), (1055, 19620), (1090, 18990), (1266, 16350), (1308, 15825), (1635, 12660), (1899, 10900), (1962, 10550), (2110, 9810), (2180, 9495), (2532, 8175), (2725, 7596), (3165, 6540), (3270, 6330), (3798, 5450), (3924, 5275), (4220, 4905)]