20678250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{79}}^1\times {\mathrm{349}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 52416000

約数和(自身を除く): 31737750

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 79, 125, 150, 158, 237, 250, 349, 375, 395, 474, 698, 750, 790, 1047, 1185, 1745, 1975, 2094, 2370, 3490, 3950, 5235, 5925, 8725, 9875, 10470, 11850, 17450, 19750, 26175, 27571, 29625, 43625, 52350, 55142, 59250, 82713, 87250, 130875, 137855, 165426, 261750, 275710, 413565, 689275, 827130, 1378550, 2067825, 3446375, 4135650, 6892750, 10339125, 20678250]

約数ペア:

[(1, 20678250), (2, 10339125), (3, 6892750), (5, 4135650), (6, 3446375), (10, 2067825), (15, 1378550), (25, 827130), (30, 689275), (50, 413565), (75, 275710), (79, 261750), (125, 165426), (150, 137855), (158, 130875), (237, 87250), (250, 82713), (349, 59250), (375, 55142), (395, 52350), (474, 43625), (698, 29625), (750, 27571), (790, 26175), (1047, 19750), (1185, 17450), (1745, 11850), (1975, 10470), (2094, 9875), (2370, 8725), (3490, 5925), (3950, 5235)]