991120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{953}}^1$

素因数の和:979

約数の個数: 40

約数和(自身を含む): 2484216

約数和(自身を除く): 1493096

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 953, 1040, 1906, 3812, 4765, 7624, 9530, 12389, 15248, 19060, 24778, 38120, 49556, 61945, 76240, 99112, 123890, 198224, 247780, 495560, 991120]

約数ペア:

[(1, 991120), (2, 495560), (4, 247780), (5, 198224), (8, 123890), (10, 99112), (13, 76240), (16, 61945), (20, 49556), (26, 38120), (40, 24778), (52, 19060), (65, 15248), (80, 12389), (104, 9530), (130, 7624), (208, 4765), (260, 3812), (520, 1906), (953, 1040)]