22721140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2819}}^1$

素因数の和:2872

約数の個数: 48

約数和(自身を含む): 53061120

約数和(自身を除く): 30339980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2819, 4030, 5638, 8060, 11276, 14095, 28190, 36647, 56380, 73294, 87389, 146588, 174778, 183235, 349556, 366470, 436945, 732940, 873890, 1136057, 1747780, 2272114, 4544228, 5680285, 11360570, 22721140]

約数ペア:

[(1, 22721140), (2, 11360570), (4, 5680285), (5, 4544228), (10, 2272114), (13, 1747780), (20, 1136057), (26, 873890), (31, 732940), (52, 436945), (62, 366470), (65, 349556), (124, 183235), (130, 174778), (155, 146588), (260, 87389), (310, 73294), (403, 56380), (620, 36647), (806, 28190), (1612, 14095), (2015, 11276), (2819, 8060), (4030, 5638)]