20388450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 54014400

約数和(自身を除く): 33625950

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 29, 30, 43, 50, 58, 75, 86, 87, 109, 129, 145, 150, 174, 215, 218, 258, 290, 327, 430, 435, 545, 645, 654, 725, 870, 1075, 1090, 1247, 1290, 1450, 1635, 2150, 2175, 2494, 2725, 3161, 3225, 3270, 3741, 4350, 4687, 5450, 6235, 6322, 6450, 7482, 8175, 9374, 9483, 12470, 14061, 15805, 16350, 18705, 18966, 23435, 28122, 31175, 31610, 37410, 46870, 47415, 62350, 70305, 79025, 93525, 94830, 117175, 135923, 140610, 158050, 187050, 234350, 237075, 271846, 351525, 407769, 474150, 679615, 703050, 815538, 1359230, 2038845, 3398075, 4077690, 6796150, 10194225, 20388450]

約数ペア:

[(1, 20388450), (2, 10194225), (3, 6796150), (5, 4077690), (6, 3398075), (10, 2038845), (15, 1359230), (25, 815538), (29, 703050), (30, 679615), (43, 474150), (50, 407769), (58, 351525), (75, 271846), (86, 237075), (87, 234350), (109, 187050), (129, 158050), (145, 140610), (150, 135923), (174, 117175), (215, 94830), (218, 93525), (258, 79025), (290, 70305), (327, 62350), (430, 47415), (435, 46870), (545, 37410), (645, 31610), (654, 31175), (725, 28122), (870, 23435), (1075, 18966), (1090, 18705), (1247, 16350), (1290, 15805), (1450, 14061), (1635, 12470), (2150, 9483), (2175, 9374), (2494, 8175), (2725, 7482), (3161, 6450), (3225, 6322), (3270, 6235), (3741, 5450), (4350, 4687)]