21098518

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 48

約数和(自身を含む): 38782800

約数和(自身を除く): 17684282

約数列:

[1, 2, 7, 14, 41, 49, 59, 82, 89, 98, 118, 178, 287, 413, 574, 623, 826, 1246, 2009, 2419, 2891, 3649, 4018, 4361, 4838, 5251, 5782, 7298, 8722, 10502, 16933, 25543, 33866, 36757, 51086, 73514, 118531, 178801, 215291, 237062, 257299, 357602, 430582, 514598, 1507037, 3014074, 10549259, 21098518]

約数ペア:

[(1, 21098518), (2, 10549259), (7, 3014074), (14, 1507037), (41, 514598), (49, 430582), (59, 357602), (82, 257299), (89, 237062), (98, 215291), (118, 178801), (178, 118531), (287, 73514), (413, 51086), (574, 36757), (623, 33866), (826, 25543), (1246, 16933), (2009, 10502), (2419, 8722), (2891, 7298), (3649, 5782), (4018, 5251), (4361, 4838)]