18873920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{349}}^1$

素因数の和:392

約数の個数: 84

約数和(自身を含む): 48806100

約数和(自身を除く): 29932180

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 169, 208, 260, 320, 338, 349, 416, 520, 676, 698, 832, 845, 1040, 1352, 1396, 1690, 1745, 2080, 2704, 2792, 3380, 3490, 4160, 4537, 5408, 5584, 6760, 6980, 9074, 10816, 11168, 13520, 13960, 18148, 22336, 22685, 27040, 27920, 36296, 45370, 54080, 55840, 58981, 72592, 90740, 111680, 117962, 145184, 181480, 235924, 290368, 294905, 362960, 471848, 589810, 725920, 943696, 1179620, 1451840, 1887392, 2359240, 3774784, 4718480, 9436960, 18873920]

約数ペア:

[(1, 18873920), (2, 9436960), (4, 4718480), (5, 3774784), (8, 2359240), (10, 1887392), (13, 1451840), (16, 1179620), (20, 943696), (26, 725920), (32, 589810), (40, 471848), (52, 362960), (64, 294905), (65, 290368), (80, 235924), (104, 181480), (130, 145184), (160, 117962), (169, 111680), (208, 90740), (260, 72592), (320, 58981), (338, 55840), (349, 54080), (416, 45370), (520, 36296), (676, 27920), (698, 27040), (832, 22685), (845, 22336), (1040, 18148), (1352, 13960), (1396, 13520), (1690, 11168), (1745, 10816), (2080, 9074), (2704, 6980), (2792, 6760), (3380, 5584), (3490, 5408), (4160, 4537)]