21688956

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 59339280

約数和(自身を除く): 37650324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 37, 38, 57, 74, 76, 111, 114, 148, 171, 222, 228, 333, 342, 444, 666, 684, 703, 857, 1332, 1406, 1714, 2109, 2571, 2812, 3428, 4218, 5142, 6327, 7713, 8436, 10284, 12654, 15426, 16283, 25308, 30852, 31709, 32566, 48849, 63418, 65132, 95127, 97698, 126836, 146547, 190254, 195396, 285381, 293094, 380508, 570762, 586188, 602471, 1141524, 1204942, 1807413, 2409884, 3614826, 5422239, 7229652, 10844478, 21688956]

約数ペア:

[(1, 21688956), (2, 10844478), (3, 7229652), (4, 5422239), (6, 3614826), (9, 2409884), (12, 1807413), (18, 1204942), (19, 1141524), (36, 602471), (37, 586188), (38, 570762), (57, 380508), (74, 293094), (76, 285381), (111, 195396), (114, 190254), (148, 146547), (171, 126836), (222, 97698), (228, 95127), (333, 65132), (342, 63418), (444, 48849), (666, 32566), (684, 31709), (703, 30852), (857, 25308), (1332, 16283), (1406, 15426), (1714, 12654), (2109, 10284), (2571, 8436), (2812, 7713), (3428, 6327), (4218, 5142)]