78820840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:635

約数の個数: 128

約数和(自身を含む): 222393600

約数和(自身を除く): 143572760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 29, 34, 35, 40, 56, 58, 68, 70, 85, 116, 119, 136, 140, 145, 170, 203, 232, 238, 280, 290, 340, 406, 476, 493, 571, 580, 595, 680, 812, 952, 986, 1015, 1142, 1160, 1190, 1624, 1972, 2030, 2284, 2380, 2465, 2855, 3451, 3944, 3997, 4060, 4568, 4760, 4930, 5710, 6902, 7994, 8120, 9707, 9860, 11420, 13804, 15988, 16559, 17255, 19414, 19720, 19985, 22840, 27608, 31976, 33118, 34510, 38828, 39970, 48535, 66236, 67949, 69020, 77656, 79940, 82795, 97070, 115913, 132472, 135898, 138040, 159880, 165590, 194140, 231826, 271796, 281503, 331180, 339745, 388280, 463652, 543592, 563006, 579565, 662360, 679490, 927304, 1126012, 1159130, 1358980, 1407515, 1970521, 2252024, 2318260, 2717960, 2815030, 3941042, 4636520, 5630060, 7882084, 9852605, 11260120, 15764168, 19705210, 39410420, 78820840]

約数ペア:

[(1, 78820840), (2, 39410420), (4, 19705210), (5, 15764168), (7, 11260120), (8, 9852605), (10, 7882084), (14, 5630060), (17, 4636520), (20, 3941042), (28, 2815030), (29, 2717960), (34, 2318260), (35, 2252024), (40, 1970521), (56, 1407515), (58, 1358980), (68, 1159130), (70, 1126012), (85, 927304), (116, 679490), (119, 662360), (136, 579565), (140, 563006), (145, 543592), (170, 463652), (203, 388280), (232, 339745), (238, 331180), (280, 281503), (290, 271796), (340, 231826), (406, 194140), (476, 165590), (493, 159880), (571, 138040), (580, 135898), (595, 132472), (680, 115913), (812, 97070), (952, 82795), (986, 79940), (1015, 77656), (1142, 69020), (1160, 67949), (1190, 66236), (1624, 48535), (1972, 39970), (2030, 38828), (2284, 34510), (2380, 33118), (2465, 31976), (2855, 27608), (3451, 22840), (3944, 19985), (3997, 19720), (4060, 19414), (4568, 17255), (4760, 16559), (4930, 15988), (5710, 13804), (6902, 11420), (7994, 9860), (8120, 9707)]