21787740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9311}}^1$

素因数の和:9339

約数の個数: 72

約数和(自身を含む): 71180928

約数和(自身を除く): 49393188

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9311, 18622, 27933, 37244, 46555, 55866, 83799, 93110, 111732, 121043, 139665, 167598, 186220, 242086, 279330, 335196, 363129, 418995, 484172, 558660, 605215, 726258, 837990, 1089387, 1210430, 1452516, 1675980, 1815645, 2178774, 2420860, 3631290, 4357548, 5446935, 7262580, 10893870, 21787740]

約数ペア:

[(1, 21787740), (2, 10893870), (3, 7262580), (4, 5446935), (5, 4357548), (6, 3631290), (9, 2420860), (10, 2178774), (12, 1815645), (13, 1675980), (15, 1452516), (18, 1210430), (20, 1089387), (26, 837990), (30, 726258), (36, 605215), (39, 558660), (45, 484172), (52, 418995), (60, 363129), (65, 335196), (78, 279330), (90, 242086), (117, 186220), (130, 167598), (156, 139665), (180, 121043), (195, 111732), (234, 93110), (260, 83799), (390, 55866), (468, 46555), (585, 37244), (780, 27933), (1170, 18622), (2340, 9311)]