21512790

素因数分解:

$2^1\times 3^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1$

素因数の和:265

約数の個数: 112

約数和(自身を含む): 62799408

約数和(自身を除く): 41286618

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 195, 227, 234, 243, 270, 351, 390, 405, 454, 486, 585, 681, 702, 729, 810, 1053, 1135, 1170, 1215, 1362, 1458, 1755, 2043, 2106, 2270, 2430, 2951, 3159, 3405, 3510, 3645, 4086, 5265, 5902, 6129, 6318, 6810, 7290, 8853, 9477, 10215, 10530, 12258, 14755, 15795, 17706, 18387, 18954, 20430, 26559, 29510, 30645, 31590, 36774, 44265, 47385, 53118, 55161, 61290, 79677, 88530, 91935, 94770, 110322, 132795, 159354, 165483, 183870, 239031, 265590, 275805, 330966, 398385, 478062, 551610, 717093, 796770, 827415, 1195155, 1434186, 1654830, 2151279, 2390310, 3585465, 4302558, 7170930, 10756395, 21512790]

約数ペア:

[(1, 21512790), (2, 10756395), (3, 7170930), (5, 4302558), (6, 3585465), (9, 2390310), (10, 2151279), (13, 1654830), (15, 1434186), (18, 1195155), (26, 827415), (27, 796770), (30, 717093), (39, 551610), (45, 478062), (54, 398385), (65, 330966), (78, 275805), (81, 265590), (90, 239031), (117, 183870), (130, 165483), (135, 159354), (162, 132795), (195, 110322), (227, 94770), (234, 91935), (243, 88530), (270, 79677), (351, 61290), (390, 55161), (405, 53118), (454, 47385), (486, 44265), (585, 36774), (681, 31590), (702, 30645), (729, 29510), (810, 26559), (1053, 20430), (1135, 18954), (1170, 18387), (1215, 17706), (1362, 15795), (1458, 14755), (1755, 12258), (2043, 10530), (2106, 10215), (2270, 9477), (2430, 8853), (2951, 7290), (3159, 6810), (3405, 6318), (3510, 6129), (3645, 5902), (4086, 5265)]