18956140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^2$

素因数の和:104

約数の個数: 108

約数和(自身を含む): 50044176

約数和(自身を除く): 31088036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 29, 35, 46, 49, 58, 70, 92, 98, 115, 116, 140, 145, 161, 196, 203, 230, 245, 290, 322, 406, 460, 490, 580, 644, 667, 805, 812, 841, 980, 1015, 1127, 1334, 1421, 1610, 1682, 2030, 2254, 2668, 2842, 3220, 3335, 3364, 4060, 4205, 4508, 4669, 5635, 5684, 5887, 6670, 7105, 8410, 9338, 11270, 11774, 13340, 14210, 16820, 18676, 19343, 22540, 23345, 23548, 28420, 29435, 32683, 38686, 41209, 46690, 58870, 65366, 77372, 82418, 93380, 96715, 117740, 130732, 135401, 163415, 164836, 193430, 206045, 270802, 326830, 386860, 412090, 541604, 653660, 677005, 824180, 947807, 1354010, 1895614, 2708020, 3791228, 4739035, 9478070, 18956140]

約数ペア:

[(1, 18956140), (2, 9478070), (4, 4739035), (5, 3791228), (7, 2708020), (10, 1895614), (14, 1354010), (20, 947807), (23, 824180), (28, 677005), (29, 653660), (35, 541604), (46, 412090), (49, 386860), (58, 326830), (70, 270802), (92, 206045), (98, 193430), (115, 164836), (116, 163415), (140, 135401), (145, 130732), (161, 117740), (196, 96715), (203, 93380), (230, 82418), (245, 77372), (290, 65366), (322, 58870), (406, 46690), (460, 41209), (490, 38686), (580, 32683), (644, 29435), (667, 28420), (805, 23548), (812, 23345), (841, 22540), (980, 19343), (1015, 18676), (1127, 16820), (1334, 14210), (1421, 13340), (1610, 11774), (1682, 11270), (2030, 9338), (2254, 8410), (2668, 7105), (2842, 6670), (3220, 5887), (3335, 5684), (3364, 5635), (4060, 4669), (4205, 4508)]