20908404

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1427}}^1$

素因数の和:1485

約数の個数: 72

約数和(自身を含む): 59256288

約数和(自身を除く): 38347884

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 37, 44, 66, 74, 99, 111, 132, 148, 198, 222, 333, 396, 407, 444, 666, 814, 1221, 1332, 1427, 1628, 2442, 2854, 3663, 4281, 4884, 5708, 7326, 8562, 12843, 14652, 15697, 17124, 25686, 31394, 47091, 51372, 52799, 62788, 94182, 105598, 141273, 158397, 188364, 211196, 282546, 316794, 475191, 565092, 580789, 633588, 950382, 1161578, 1742367, 1900764, 2323156, 3484734, 5227101, 6969468, 10454202, 20908404]

約数ペア:

[(1, 20908404), (2, 10454202), (3, 6969468), (4, 5227101), (6, 3484734), (9, 2323156), (11, 1900764), (12, 1742367), (18, 1161578), (22, 950382), (33, 633588), (36, 580789), (37, 565092), (44, 475191), (66, 316794), (74, 282546), (99, 211196), (111, 188364), (132, 158397), (148, 141273), (198, 105598), (222, 94182), (333, 62788), (396, 52799), (407, 51372), (444, 47091), (666, 31394), (814, 25686), (1221, 17124), (1332, 15697), (1427, 14652), (1628, 12843), (2442, 8562), (2854, 7326), (3663, 5708), (4281, 4884)]