68534140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^2$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 161980560

約数和(自身を除く): 93446420

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 103, 170, 190, 206, 323, 340, 380, 412, 515, 646, 1030, 1292, 1615, 1751, 1957, 2060, 3230, 3502, 3914, 6460, 7004, 7828, 8755, 9785, 10609, 17510, 19570, 21218, 33269, 35020, 39140, 42436, 53045, 66538, 106090, 133076, 166345, 180353, 201571, 212180, 332690, 360706, 403142, 665380, 721412, 806284, 901765, 1007855, 1803530, 2015710, 3426707, 3607060, 4031420, 6853414, 13706828, 17133535, 34267070, 68534140]

約数ペア:

[(1, 68534140), (2, 34267070), (4, 17133535), (5, 13706828), (10, 6853414), (17, 4031420), (19, 3607060), (20, 3426707), (34, 2015710), (38, 1803530), (68, 1007855), (76, 901765), (85, 806284), (95, 721412), (103, 665380), (170, 403142), (190, 360706), (206, 332690), (323, 212180), (340, 201571), (380, 180353), (412, 166345), (515, 133076), (646, 106090), (1030, 66538), (1292, 53045), (1615, 42436), (1751, 39140), (1957, 35020), (2060, 33269), (3230, 21218), (3502, 19570), (3914, 17510), (6460, 10609), (7004, 9785), (7828, 8755)]