20649424

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{853}}^1$

素因数の和:967

約数の個数: 40

約数和(自身を含む): 42887880

約数和(自身を除く): 22238456

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 89, 136, 178, 272, 356, 712, 853, 1424, 1513, 1706, 3026, 3412, 6052, 6824, 12104, 13648, 14501, 24208, 29002, 58004, 75917, 116008, 151834, 232016, 303668, 607336, 1214672, 1290589, 2581178, 5162356, 10324712, 20649424]

約数ペア:

[(1, 20649424), (2, 10324712), (4, 5162356), (8, 2581178), (16, 1290589), (17, 1214672), (34, 607336), (68, 303668), (89, 232016), (136, 151834), (178, 116008), (272, 75917), (356, 58004), (712, 29002), (853, 24208), (1424, 14501), (1513, 13648), (1706, 12104), (3026, 6824), (3412, 6052)]