21968620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{367}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 48037248

約数和(自身を除く): 26068628

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 146, 164, 205, 292, 365, 367, 410, 730, 734, 820, 1460, 1468, 1835, 2993, 3670, 5986, 7340, 11972, 14965, 15047, 26791, 29930, 30094, 53582, 59860, 60188, 75235, 107164, 133955, 150470, 267910, 300940, 535820, 1098431, 2196862, 4393724, 5492155, 10984310, 21968620]

約数ペア:

[(1, 21968620), (2, 10984310), (4, 5492155), (5, 4393724), (10, 2196862), (20, 1098431), (41, 535820), (73, 300940), (82, 267910), (146, 150470), (164, 133955), (205, 107164), (292, 75235), (365, 60188), (367, 59860), (410, 53582), (730, 30094), (734, 29930), (820, 26791), (1460, 15047), (1468, 14965), (1835, 11972), (2993, 7340), (3670, 5986)]