168980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:104

約数の個数: 48

約数和(自身を含む): 435456

約数和(自身を除く): 266476

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 71, 85, 119, 140, 142, 170, 238, 284, 340, 355, 476, 497, 595, 710, 994, 1190, 1207, 1420, 1988, 2380, 2414, 2485, 4828, 4970, 6035, 8449, 9940, 12070, 16898, 24140, 33796, 42245, 84490, 168980]

約数ペア:

[(1, 168980), (2, 84490), (4, 42245), (5, 33796), (7, 24140), (10, 16898), (14, 12070), (17, 9940), (20, 8449), (28, 6035), (34, 4970), (35, 4828), (68, 2485), (70, 2414), (71, 2380), (85, 1988), (119, 1420), (140, 1207), (142, 1190), (170, 994), (238, 710), (284, 595), (340, 497), (355, 476)]