18380780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 45239040

約数和(自身を除く): 26858260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 43, 44, 55, 58, 67, 86, 110, 116, 134, 145, 172, 215, 220, 268, 290, 319, 335, 430, 473, 580, 638, 670, 737, 860, 946, 1247, 1276, 1340, 1474, 1595, 1892, 1943, 2365, 2494, 2881, 2948, 3190, 3685, 3886, 4730, 4988, 5762, 6235, 6380, 7370, 7772, 9460, 9715, 11524, 12470, 13717, 14405, 14740, 19430, 21373, 24940, 27434, 28810, 31691, 38860, 42746, 54868, 57620, 63382, 68585, 83549, 85492, 106865, 126764, 137170, 158455, 167098, 213730, 274340, 316910, 334196, 417745, 427460, 633820, 835490, 919039, 1670980, 1838078, 3676156, 4595195, 9190390, 18380780]

約数ペア:

[(1, 18380780), (2, 9190390), (4, 4595195), (5, 3676156), (10, 1838078), (11, 1670980), (20, 919039), (22, 835490), (29, 633820), (43, 427460), (44, 417745), (55, 334196), (58, 316910), (67, 274340), (86, 213730), (110, 167098), (116, 158455), (134, 137170), (145, 126764), (172, 106865), (215, 85492), (220, 83549), (268, 68585), (290, 63382), (319, 57620), (335, 54868), (430, 42746), (473, 38860), (580, 31691), (638, 28810), (670, 27434), (737, 24940), (860, 21373), (946, 19430), (1247, 14740), (1276, 14405), (1340, 13717), (1474, 12470), (1595, 11524), (1892, 9715), (1943, 9460), (2365, 7772), (2494, 7370), (2881, 6380), (2948, 6235), (3190, 5762), (3685, 4988), (3886, 4730)]