20786325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{137}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 42027072

約数和(自身を除く): 21240747

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 137, 175, 255, 289, 357, 411, 425, 525, 595, 685, 867, 959, 1275, 1445, 1785, 2023, 2055, 2329, 2877, 2975, 3425, 4335, 4795, 6069, 6987, 7225, 8925, 10115, 10275, 11645, 14385, 16303, 21675, 23975, 30345, 34935, 39593, 48909, 50575, 58225, 71925, 81515, 118779, 151725, 174675, 197965, 244545, 277151, 407575, 593895, 831453, 989825, 1222725, 1385755, 2969475, 4157265, 6928775, 20786325]

約数ペア:

[(1, 20786325), (3, 6928775), (5, 4157265), (7, 2969475), (15, 1385755), (17, 1222725), (21, 989825), (25, 831453), (35, 593895), (51, 407575), (75, 277151), (85, 244545), (105, 197965), (119, 174675), (137, 151725), (175, 118779), (255, 81515), (289, 71925), (357, 58225), (411, 50575), (425, 48909), (525, 39593), (595, 34935), (685, 30345), (867, 23975), (959, 21675), (1275, 16303), (1445, 14385), (1785, 11645), (2023, 10275), (2055, 10115), (2329, 8925), (2877, 7225), (2975, 6987), (3425, 6069), (4335, 4795)]