78552880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{691}}^1$

素因数の和:747

約数の個数: 120

約数和(自身を含む): 220097520

約数和(自身を除く): 141544640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 196, 203, 232, 245, 280, 290, 392, 406, 464, 490, 560, 580, 691, 784, 812, 980, 1015, 1160, 1382, 1421, 1624, 1960, 2030, 2320, 2764, 2842, 3248, 3455, 3920, 4060, 4837, 5528, 5684, 6910, 7105, 8120, 9674, 11056, 11368, 13820, 14210, 16240, 19348, 20039, 22736, 24185, 27640, 28420, 33859, 38696, 40078, 48370, 55280, 56840, 67718, 77392, 80156, 96740, 100195, 113680, 135436, 140273, 160312, 169295, 193480, 200390, 270872, 280546, 320624, 338590, 386960, 400780, 541744, 561092, 677180, 701365, 801560, 981911, 1122184, 1354360, 1402730, 1603120, 1963822, 2244368, 2708720, 2805460, 3927644, 4909555, 5610920, 7855288, 9819110, 11221840, 15710576, 19638220, 39276440, 78552880]

約数ペア:

[(1, 78552880), (2, 39276440), (4, 19638220), (5, 15710576), (7, 11221840), (8, 9819110), (10, 7855288), (14, 5610920), (16, 4909555), (20, 3927644), (28, 2805460), (29, 2708720), (35, 2244368), (40, 1963822), (49, 1603120), (56, 1402730), (58, 1354360), (70, 1122184), (80, 981911), (98, 801560), (112, 701365), (116, 677180), (140, 561092), (145, 541744), (196, 400780), (203, 386960), (232, 338590), (245, 320624), (280, 280546), (290, 270872), (392, 200390), (406, 193480), (464, 169295), (490, 160312), (560, 140273), (580, 135436), (691, 113680), (784, 100195), (812, 96740), (980, 80156), (1015, 77392), (1160, 67718), (1382, 56840), (1421, 55280), (1624, 48370), (1960, 40078), (2030, 38696), (2320, 33859), (2764, 28420), (2842, 27640), (3248, 24185), (3455, 22736), (3920, 20039), (4060, 19348), (4837, 16240), (5528, 14210), (5684, 13820), (6910, 11368), (7105, 11056), (8120, 9674)]