19203975

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 40042080

約数和(自身を除く): 20838105

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 89, 105, 137, 175, 225, 267, 315, 411, 445, 525, 623, 685, 801, 959, 1233, 1335, 1575, 1869, 2055, 2225, 2877, 3115, 3425, 4005, 4795, 5607, 6165, 6675, 8631, 9345, 10275, 12193, 14385, 15575, 20025, 23975, 28035, 30825, 36579, 43155, 46725, 60965, 71925, 85351, 109737, 140175, 182895, 215775, 256053, 304825, 426755, 548685, 768159, 914475, 1280265, 2133775, 2743425, 3840795, 6401325, 19203975]

約数ペア:

[(1, 19203975), (3, 6401325), (5, 3840795), (7, 2743425), (9, 2133775), (15, 1280265), (21, 914475), (25, 768159), (35, 548685), (45, 426755), (63, 304825), (75, 256053), (89, 215775), (105, 182895), (137, 140175), (175, 109737), (225, 85351), (267, 71925), (315, 60965), (411, 46725), (445, 43155), (525, 36579), (623, 30825), (685, 28035), (801, 23975), (959, 20025), (1233, 15575), (1335, 14385), (1575, 12193), (1869, 10275), (2055, 9345), (2225, 8631), (2877, 6675), (3115, 6165), (3425, 5607), (4005, 4795)]