78108880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{727}}^1$

素因数の和:836

約数の個数: 80

約数和(自身を含む): 194987520

約数和(自身を除く): 116878640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 79, 80, 85, 136, 158, 170, 272, 316, 340, 395, 632, 680, 727, 790, 1264, 1343, 1360, 1454, 1580, 2686, 2908, 3160, 3635, 5372, 5816, 6320, 6715, 7270, 10744, 11632, 12359, 13430, 14540, 21488, 24718, 26860, 29080, 49436, 53720, 57433, 58160, 61795, 98872, 107440, 114866, 123590, 197744, 229732, 247180, 287165, 459464, 494360, 574330, 918928, 976361, 988720, 1148660, 1952722, 2297320, 3905444, 4594640, 4881805, 7810888, 9763610, 15621776, 19527220, 39054440, 78108880]

約数ペア:

[(1, 78108880), (2, 39054440), (4, 19527220), (5, 15621776), (8, 9763610), (10, 7810888), (16, 4881805), (17, 4594640), (20, 3905444), (34, 2297320), (40, 1952722), (68, 1148660), (79, 988720), (80, 976361), (85, 918928), (136, 574330), (158, 494360), (170, 459464), (272, 287165), (316, 247180), (340, 229732), (395, 197744), (632, 123590), (680, 114866), (727, 107440), (790, 98872), (1264, 61795), (1343, 58160), (1360, 57433), (1454, 53720), (1580, 49436), (2686, 29080), (2908, 26860), (3160, 24718), (3635, 21488), (5372, 14540), (5816, 13430), (6320, 12359), (6715, 11632), (7270, 10744)]