21156633

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1$

素因数の和:323

約数の個数: 40

約数和(自身を含む): 33976800

約数和(自身を除く): 12820167

約数列:

[1, 3, 9, 19, 27, 57, 59, 81, 171, 177, 233, 513, 531, 699, 1121, 1539, 1593, 2097, 3363, 4427, 4779, 6291, 10089, 13281, 13747, 18873, 30267, 39843, 41241, 90801, 119529, 123723, 261193, 358587, 371169, 783579, 1113507, 2350737, 7052211, 21156633]

約数ペア:

[(1, 21156633), (3, 7052211), (9, 2350737), (19, 1113507), (27, 783579), (57, 371169), (59, 358587), (81, 261193), (171, 123723), (177, 119529), (233, 90801), (513, 41241), (531, 39843), (699, 30267), (1121, 18873), (1539, 13747), (1593, 13281), (2097, 10089), (3363, 6291), (4427, 4779)]