28591420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{769}}^1$

素因数の和:815

約数の個数: 72

約数和(自身を含む): 71018640

約数和(自身を除く): 42427220

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 169, 220, 260, 286, 338, 572, 676, 715, 769, 845, 1430, 1538, 1690, 1859, 2860, 3076, 3380, 3718, 3845, 7436, 7690, 8459, 9295, 9997, 15380, 16918, 18590, 19994, 33836, 37180, 39988, 42295, 49985, 84590, 99970, 109967, 129961, 169180, 199940, 219934, 259922, 439868, 519844, 549835, 649805, 1099670, 1299610, 1429571, 2199340, 2599220, 2859142, 5718284, 7147855, 14295710, 28591420]

約数ペア:

[(1, 28591420), (2, 14295710), (4, 7147855), (5, 5718284), (10, 2859142), (11, 2599220), (13, 2199340), (20, 1429571), (22, 1299610), (26, 1099670), (44, 649805), (52, 549835), (55, 519844), (65, 439868), (110, 259922), (130, 219934), (143, 199940), (169, 169180), (220, 129961), (260, 109967), (286, 99970), (338, 84590), (572, 49985), (676, 42295), (715, 39988), (769, 37180), (845, 33836), (1430, 19994), (1538, 18590), (1690, 16918), (1859, 15380), (2860, 9997), (3076, 9295), (3380, 8459), (3718, 7690), (3845, 7436)]