20853180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 144

約数和(自身を含む): 68748960

約数和(自身を除く): 47895780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 73, 90, 92, 108, 115, 135, 138, 146, 180, 207, 219, 230, 270, 276, 292, 345, 365, 414, 438, 460, 529, 540, 621, 657, 690, 730, 828, 876, 1035, 1058, 1095, 1242, 1314, 1380, 1460, 1587, 1679, 1971, 2070, 2116, 2190, 2484, 2628, 2645, 3105, 3174, 3285, 3358, 3942, 4140, 4380, 4761, 5037, 5290, 6210, 6348, 6570, 6716, 7884, 7935, 8395, 9522, 9855, 10074, 10580, 12420, 13140, 14283, 15111, 15870, 16790, 19044, 19710, 20148, 23805, 25185, 28566, 30222, 31740, 33580, 38617, 39420, 45333, 47610, 50370, 57132, 60444, 71415, 75555, 77234, 90666, 95220, 100740, 115851, 142830, 151110, 154468, 181332, 193085, 226665, 231702, 285660, 302220, 347553, 386170, 453330, 463404, 579255, 695106, 772340, 906660, 1042659, 1158510, 1390212, 1737765, 2085318, 2317020, 3475530, 4170636, 5213295, 6951060, 10426590, 20853180]

約数ペア:

[(1, 20853180), (2, 10426590), (3, 6951060), (4, 5213295), (5, 4170636), (6, 3475530), (9, 2317020), (10, 2085318), (12, 1737765), (15, 1390212), (18, 1158510), (20, 1042659), (23, 906660), (27, 772340), (30, 695106), (36, 579255), (45, 463404), (46, 453330), (54, 386170), (60, 347553), (69, 302220), (73, 285660), (90, 231702), (92, 226665), (108, 193085), (115, 181332), (135, 154468), (138, 151110), (146, 142830), (180, 115851), (207, 100740), (219, 95220), (230, 90666), (270, 77234), (276, 75555), (292, 71415), (345, 60444), (365, 57132), (414, 50370), (438, 47610), (460, 45333), (529, 39420), (540, 38617), (621, 33580), (657, 31740), (690, 30222), (730, 28566), (828, 25185), (876, 23805), (1035, 20148), (1058, 19710), (1095, 19044), (1242, 16790), (1314, 15870), (1380, 15111), (1460, 14283), (1587, 13140), (1679, 12420), (1971, 10580), (2070, 10074), (2116, 9855), (2190, 9522), (2484, 8395), (2628, 7935), (2645, 7884), (3105, 6716), (3174, 6570), (3285, 6348), (3358, 6210), (3942, 5290), (4140, 5037), (4380, 4761)]