289120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 740880

約数和(自身を除く): 451760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 139, 160, 208, 260, 278, 416, 520, 556, 695, 1040, 1112, 1390, 1807, 2080, 2224, 2780, 3614, 4448, 5560, 7228, 9035, 11120, 14456, 18070, 22240, 28912, 36140, 57824, 72280, 144560, 289120]

約数ペア:

[(1, 289120), (2, 144560), (4, 72280), (5, 57824), (8, 36140), (10, 28912), (13, 22240), (16, 18070), (20, 14456), (26, 11120), (32, 9035), (40, 7228), (52, 5560), (65, 4448), (80, 3614), (104, 2780), (130, 2224), (139, 2080), (160, 1807), (208, 1390), (260, 1112), (278, 1040), (416, 695), (520, 556)]