64819640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 169128000

約数和(自身を除く): 104308360

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 29, 34, 38, 40, 58, 68, 76, 85, 95, 116, 136, 145, 152, 170, 173, 190, 232, 290, 323, 340, 346, 380, 493, 551, 580, 646, 680, 692, 760, 865, 986, 1102, 1160, 1292, 1384, 1615, 1730, 1972, 2204, 2465, 2584, 2755, 2941, 3230, 3287, 3460, 3944, 4408, 4930, 5017, 5510, 5882, 6460, 6574, 6920, 9367, 9860, 10034, 11020, 11764, 12920, 13148, 14705, 16435, 18734, 19720, 20068, 22040, 23528, 25085, 26296, 29410, 32870, 37468, 40136, 46835, 50170, 55879, 58820, 65740, 74936, 85289, 93670, 95323, 100340, 111758, 117640, 131480, 170578, 187340, 190646, 200680, 223516, 279395, 341156, 374680, 381292, 426445, 447032, 476615, 558790, 682312, 762584, 852890, 953230, 1117580, 1620491, 1705780, 1906460, 2235160, 3240982, 3411560, 3812920, 6481964, 8102455, 12963928, 16204910, 32409820, 64819640]

約数ペア:

[(1, 64819640), (2, 32409820), (4, 16204910), (5, 12963928), (8, 8102455), (10, 6481964), (17, 3812920), (19, 3411560), (20, 3240982), (29, 2235160), (34, 1906460), (38, 1705780), (40, 1620491), (58, 1117580), (68, 953230), (76, 852890), (85, 762584), (95, 682312), (116, 558790), (136, 476615), (145, 447032), (152, 426445), (170, 381292), (173, 374680), (190, 341156), (232, 279395), (290, 223516), (323, 200680), (340, 190646), (346, 187340), (380, 170578), (493, 131480), (551, 117640), (580, 111758), (646, 100340), (680, 95323), (692, 93670), (760, 85289), (865, 74936), (986, 65740), (1102, 58820), (1160, 55879), (1292, 50170), (1384, 46835), (1615, 40136), (1730, 37468), (1972, 32870), (2204, 29410), (2465, 26296), (2584, 25085), (2755, 23528), (2941, 22040), (3230, 20068), (3287, 19720), (3460, 18734), (3944, 16435), (4408, 14705), (4930, 13148), (5017, 12920), (5510, 11764), (5882, 11020), (6460, 10034), (6574, 9860), (6920, 9367)]