19215880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11717}}^1$

素因数の和:11769

約数の個数: 32

約数和(自身を含む): 44294040

約数和(自身を除く): 25078160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11717, 23434, 46868, 58585, 93736, 117170, 234340, 468680, 480397, 960794, 1921588, 2401985, 3843176, 4803970, 9607940, 19215880]

約数ペア:

[(1, 19215880), (2, 9607940), (4, 4803970), (5, 3843176), (8, 2401985), (10, 1921588), (20, 960794), (40, 480397), (41, 468680), (82, 234340), (164, 117170), (205, 93736), (328, 58585), (410, 46868), (820, 23434), (1640, 11717)]