21811986

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{599}}^1$

素因数の和:648

約数の個数: 72

約数和(自身を含む): 57470400

約数和(自身を除く): 35658414

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 102, 119, 126, 153, 238, 289, 306, 357, 578, 599, 714, 867, 1071, 1198, 1734, 1797, 2023, 2142, 2601, 3594, 4046, 4193, 5202, 5391, 6069, 8386, 10183, 10782, 12138, 12579, 18207, 20366, 25158, 30549, 36414, 37737, 61098, 71281, 75474, 91647, 142562, 173111, 183294, 213843, 346222, 427686, 519333, 641529, 1038666, 1211777, 1283058, 1557999, 2423554, 3115998, 3635331, 7270662, 10905993, 21811986]

約数ペア:

[(1, 21811986), (2, 10905993), (3, 7270662), (6, 3635331), (7, 3115998), (9, 2423554), (14, 1557999), (17, 1283058), (18, 1211777), (21, 1038666), (34, 641529), (42, 519333), (51, 427686), (63, 346222), (102, 213843), (119, 183294), (126, 173111), (153, 142562), (238, 91647), (289, 75474), (306, 71281), (357, 61098), (578, 37737), (599, 36414), (714, 30549), (867, 25158), (1071, 20366), (1198, 18207), (1734, 12579), (1797, 12138), (2023, 10782), (2142, 10183), (2601, 8386), (3594, 6069), (4046, 5391), (4193, 5202)]