21147660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6911}}^1$

素因数の和:6943

約数の個数: 72

約数和(自身を含む): 67931136

約数和(自身を除く): 46783476

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6911, 13822, 20733, 27644, 34555, 41466, 62199, 69110, 82932, 103665, 117487, 124398, 138220, 207330, 234974, 248796, 310995, 352461, 414660, 469948, 587435, 621990, 704922, 1057383, 1174870, 1243980, 1409844, 1762305, 2114766, 2349740, 3524610, 4229532, 5286915, 7049220, 10573830, 21147660]

約数ペア:

[(1, 21147660), (2, 10573830), (3, 7049220), (4, 5286915), (5, 4229532), (6, 3524610), (9, 2349740), (10, 2114766), (12, 1762305), (15, 1409844), (17, 1243980), (18, 1174870), (20, 1057383), (30, 704922), (34, 621990), (36, 587435), (45, 469948), (51, 414660), (60, 352461), (68, 310995), (85, 248796), (90, 234974), (102, 207330), (153, 138220), (170, 124398), (180, 117487), (204, 103665), (255, 82932), (306, 69110), (340, 62199), (510, 41466), (612, 34555), (765, 27644), (1020, 20733), (1530, 13822), (3060, 6911)]