19782220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{701}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 24797588

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 83, 85, 166, 170, 332, 340, 415, 701, 830, 1402, 1411, 1660, 2804, 2822, 3505, 5644, 7010, 7055, 11917, 14020, 14110, 23834, 28220, 47668, 58183, 59585, 116366, 119170, 232732, 238340, 290915, 581830, 989111, 1163660, 1978222, 3956444, 4945555, 9891110, 19782220]

約数ペア:

[(1, 19782220), (2, 9891110), (4, 4945555), (5, 3956444), (10, 1978222), (17, 1163660), (20, 989111), (34, 581830), (68, 290915), (83, 238340), (85, 232732), (166, 119170), (170, 116366), (332, 59585), (340, 58183), (415, 47668), (701, 28220), (830, 23834), (1402, 14110), (1411, 14020), (1660, 11917), (2804, 7055), (2822, 7010), (3505, 5644)]