438908120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:397

約数の個数: 128

約数和(自身を含む): 1160438400

約数和(自身を除く): 721530280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 109, 140, 146, 197, 218, 280, 292, 365, 394, 436, 511, 545, 584, 730, 763, 788, 872, 985, 1022, 1090, 1379, 1460, 1526, 1576, 1970, 2044, 2180, 2555, 2758, 2920, 3052, 3815, 3940, 4088, 4360, 5110, 5516, 6104, 6895, 7630, 7880, 7957, 10220, 11032, 13790, 14381, 15260, 15914, 20440, 21473, 27580, 28762, 30520, 31828, 39785, 42946, 55160, 55699, 57524, 63656, 71905, 79570, 85892, 100667, 107365, 111398, 115048, 143810, 150311, 159140, 171784, 201334, 214730, 222796, 278495, 287620, 300622, 318280, 402668, 429460, 445592, 503335, 556990, 575240, 601244, 751555, 805336, 858920, 1006670, 1113980, 1202488, 1503110, 1567529, 2013340, 2227960, 3006220, 3135058, 4026680, 6012440, 6270116, 7837645, 10972703, 12540232, 15675290, 21945406, 31350580, 43890812, 54863515, 62701160, 87781624, 109727030, 219454060, 438908120]

約数ペア:

[(1, 438908120), (2, 219454060), (4, 109727030), (5, 87781624), (7, 62701160), (8, 54863515), (10, 43890812), (14, 31350580), (20, 21945406), (28, 15675290), (35, 12540232), (40, 10972703), (56, 7837645), (70, 6270116), (73, 6012440), (109, 4026680), (140, 3135058), (146, 3006220), (197, 2227960), (218, 2013340), (280, 1567529), (292, 1503110), (365, 1202488), (394, 1113980), (436, 1006670), (511, 858920), (545, 805336), (584, 751555), (730, 601244), (763, 575240), (788, 556990), (872, 503335), (985, 445592), (1022, 429460), (1090, 402668), (1379, 318280), (1460, 300622), (1526, 287620), (1576, 278495), (1970, 222796), (2044, 214730), (2180, 201334), (2555, 171784), (2758, 159140), (2920, 150311), (3052, 143810), (3815, 115048), (3940, 111398), (4088, 107365), (4360, 100667), (5110, 85892), (5516, 79570), (6104, 71905), (6895, 63656), (7630, 57524), (7880, 55699), (7957, 55160), (10220, 42946), (11032, 39785), (13790, 31828), (14381, 30520), (15260, 28762), (15914, 27580), (20440, 21473)]