21945240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1297}}^1$

素因数の和:1361

約数の個数: 96

約数和(自身を含む): 72895680

約数和(自身を除く): 50950440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 47, 60, 72, 90, 94, 120, 141, 180, 188, 235, 282, 360, 376, 423, 470, 564, 705, 846, 940, 1128, 1297, 1410, 1692, 1880, 2115, 2594, 2820, 3384, 3891, 4230, 5188, 5640, 6485, 7782, 8460, 10376, 11673, 12970, 15564, 16920, 19455, 23346, 25940, 31128, 38910, 46692, 51880, 58365, 60959, 77820, 93384, 116730, 121918, 155640, 182877, 233460, 243836, 304795, 365754, 466920, 487672, 548631, 609590, 731508, 914385, 1097262, 1219180, 1463016, 1828770, 2194524, 2438360, 2743155, 3657540, 4389048, 5486310, 7315080, 10972620, 21945240]

約数ペア:

[(1, 21945240), (2, 10972620), (3, 7315080), (4, 5486310), (5, 4389048), (6, 3657540), (8, 2743155), (9, 2438360), (10, 2194524), (12, 1828770), (15, 1463016), (18, 1219180), (20, 1097262), (24, 914385), (30, 731508), (36, 609590), (40, 548631), (45, 487672), (47, 466920), (60, 365754), (72, 304795), (90, 243836), (94, 233460), (120, 182877), (141, 155640), (180, 121918), (188, 116730), (235, 93384), (282, 77820), (360, 60959), (376, 58365), (423, 51880), (470, 46692), (564, 38910), (705, 31128), (846, 25940), (940, 23346), (1128, 19455), (1297, 16920), (1410, 15564), (1692, 12970), (1880, 11673), (2115, 10376), (2594, 8460), (2820, 7782), (3384, 6485), (3891, 5640), (4230, 5188)]