18619120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17903}}^1$

素因数の和:17929

約数の個数: 40

約数和(自身を含む): 46622016

約数和(自身を除く): 28002896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17903, 35806, 71612, 89515, 143224, 179030, 232739, 286448, 358060, 465478, 716120, 930956, 1163695, 1432240, 1861912, 2327390, 3723824, 4654780, 9309560, 18619120]

約数ペア:

[(1, 18619120), (2, 9309560), (4, 4654780), (5, 3723824), (8, 2327390), (10, 1861912), (13, 1432240), (16, 1163695), (20, 930956), (26, 716120), (40, 465478), (52, 358060), (65, 286448), (80, 232739), (104, 179030), (130, 143224), (208, 89515), (260, 71612), (520, 35806), (1040, 17903)]