390396640

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^2\times {\mathrm{2539}}^1$

素因数の和:2616

約数の個数: 72

約数和(自身を含む): 953399160

約数和(自身を除く): 563002520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 961, 992, 1240, 1922, 2480, 2539, 3844, 4805, 4960, 5078, 7688, 9610, 10156, 12695, 15376, 19220, 20312, 25390, 30752, 38440, 40624, 50780, 76880, 78709, 81248, 101560, 153760, 157418, 203120, 314836, 393545, 406240, 629672, 787090, 1259344, 1574180, 2439979, 2518688, 3148360, 4879958, 6296720, 9759916, 12199895, 12593440, 19519832, 24399790, 39039664, 48799580, 78079328, 97599160, 195198320, 390396640]

約数ペア:

[(1, 390396640), (2, 195198320), (4, 97599160), (5, 78079328), (8, 48799580), (10, 39039664), (16, 24399790), (20, 19519832), (31, 12593440), (32, 12199895), (40, 9759916), (62, 6296720), (80, 4879958), (124, 3148360), (155, 2518688), (160, 2439979), (248, 1574180), (310, 1259344), (496, 787090), (620, 629672), (961, 406240), (992, 393545), (1240, 314836), (1922, 203120), (2480, 157418), (2539, 153760), (3844, 101560), (4805, 81248), (4960, 78709), (5078, 76880), (7688, 50780), (9610, 40624), (10156, 38440), (12695, 30752), (15376, 25390), (19220, 20312)]