21796180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{967}}^1$

素因数の和:1013

約数の個数: 72

約数和(自身を含む): 55617408

約数和(自身を除く): 33821228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 967, 980, 1127, 1610, 1934, 2254, 3220, 3868, 4508, 4835, 5635, 6769, 9670, 11270, 13538, 19340, 22241, 22540, 27076, 33845, 44482, 47383, 67690, 88964, 94766, 111205, 135380, 155687, 189532, 222410, 236915, 311374, 444820, 473830, 622748, 778435, 947660, 1089809, 1556870, 2179618, 3113740, 4359236, 5449045, 10898090, 21796180]

約数ペア:

[(1, 21796180), (2, 10898090), (4, 5449045), (5, 4359236), (7, 3113740), (10, 2179618), (14, 1556870), (20, 1089809), (23, 947660), (28, 778435), (35, 622748), (46, 473830), (49, 444820), (70, 311374), (92, 236915), (98, 222410), (115, 189532), (140, 155687), (161, 135380), (196, 111205), (230, 94766), (245, 88964), (322, 67690), (460, 47383), (490, 44482), (644, 33845), (805, 27076), (967, 22540), (980, 22241), (1127, 19340), (1610, 13538), (1934, 11270), (2254, 9670), (3220, 6769), (3868, 5635), (4508, 4835)]