21816684

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 57762432

約数和(自身を除く): 35945748

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 113, 124, 173, 186, 226, 279, 339, 346, 372, 452, 519, 558, 678, 692, 1017, 1038, 1116, 1356, 1557, 2034, 2076, 3114, 3503, 4068, 5363, 6228, 7006, 10509, 10726, 14012, 16089, 19549, 21018, 21452, 31527, 32178, 39098, 42036, 48267, 58647, 63054, 64356, 78196, 96534, 117294, 126108, 175941, 193068, 234588, 351882, 606019, 703764, 1212038, 1818057, 2424076, 3636114, 5454171, 7272228, 10908342, 21816684]

約数ペア:

[(1, 21816684), (2, 10908342), (3, 7272228), (4, 5454171), (6, 3636114), (9, 2424076), (12, 1818057), (18, 1212038), (31, 703764), (36, 606019), (62, 351882), (93, 234588), (113, 193068), (124, 175941), (173, 126108), (186, 117294), (226, 96534), (279, 78196), (339, 64356), (346, 63054), (372, 58647), (452, 48267), (519, 42036), (558, 39098), (678, 32178), (692, 31527), (1017, 21452), (1038, 21018), (1116, 19549), (1356, 16089), (1557, 14012), (2034, 10726), (2076, 10509), (3114, 7006), (3503, 6228), (4068, 5363)]