21291660

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1$

素因数の和:374

約数の個数: 144

約数和(自身を含む): 72342816

約数和(自身を除く): 51051156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 243, 260, 270, 324, 337, 351, 390, 405, 468, 486, 540, 585, 674, 702, 780, 810, 972, 1011, 1053, 1170, 1215, 1348, 1404, 1620, 1685, 1755, 2022, 2106, 2340, 2430, 3033, 3159, 3370, 3510, 4044, 4212, 4381, 4860, 5055, 5265, 6066, 6318, 6740, 7020, 8762, 9099, 10110, 10530, 12132, 12636, 13143, 15165, 15795, 17524, 18198, 20220, 21060, 21905, 26286, 27297, 30330, 31590, 36396, 39429, 43810, 45495, 52572, 54594, 60660, 63180, 65715, 78858, 81891, 87620, 90990, 109188, 118287, 131430, 136485, 157716, 163782, 181980, 197145, 236574, 262860, 272970, 327564, 354861, 394290, 409455, 473148, 545940, 591435, 709722, 788580, 818910, 1064583, 1182870, 1419444, 1637820, 1774305, 2129166, 2365740, 3548610, 4258332, 5322915, 7097220, 10645830, 21291660]

約数ペア:

[(1, 21291660), (2, 10645830), (3, 7097220), (4, 5322915), (5, 4258332), (6, 3548610), (9, 2365740), (10, 2129166), (12, 1774305), (13, 1637820), (15, 1419444), (18, 1182870), (20, 1064583), (26, 818910), (27, 788580), (30, 709722), (36, 591435), (39, 545940), (45, 473148), (52, 409455), (54, 394290), (60, 354861), (65, 327564), (78, 272970), (81, 262860), (90, 236574), (108, 197145), (117, 181980), (130, 163782), (135, 157716), (156, 136485), (162, 131430), (180, 118287), (195, 109188), (234, 90990), (243, 87620), (260, 81891), (270, 78858), (324, 65715), (337, 63180), (351, 60660), (390, 54594), (405, 52572), (468, 45495), (486, 43810), (540, 39429), (585, 36396), (674, 31590), (702, 30330), (780, 27297), (810, 26286), (972, 21905), (1011, 21060), (1053, 20220), (1170, 18198), (1215, 17524), (1348, 15795), (1404, 15165), (1620, 13143), (1685, 12636), (1755, 12132), (2022, 10530), (2106, 10110), (2340, 9099), (2430, 8762), (3033, 7020), (3159, 6740), (3370, 6318), (3510, 6066), (4044, 5265), (4212, 5055), (4381, 4860)]