19658480

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3461}}^1$

素因数の和:3545

約数の個数: 40

約数和(自身を含む): 46363104

約数和(自身を除く): 26704624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3461, 5680, 6922, 13844, 17305, 27688, 34610, 55376, 69220, 138440, 245731, 276880, 491462, 982924, 1228655, 1965848, 2457310, 3931696, 4914620, 9829240, 19658480]

約数ペア:

[(1, 19658480), (2, 9829240), (4, 4914620), (5, 3931696), (8, 2457310), (10, 1965848), (16, 1228655), (20, 982924), (40, 491462), (71, 276880), (80, 245731), (142, 138440), (284, 69220), (355, 55376), (568, 34610), (710, 27688), (1136, 17305), (1420, 13844), (2840, 6922), (3461, 5680)]