28478212

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 61797120

約数和(自身を除く): 33318908

約数列:

[1, 2, 4, 7, 14, 28, 31, 43, 49, 62, 86, 98, 109, 124, 172, 196, 217, 218, 301, 434, 436, 602, 763, 868, 1204, 1333, 1519, 1526, 2107, 2666, 3038, 3052, 3379, 4214, 4687, 5332, 5341, 6076, 6758, 8428, 9331, 9374, 10682, 13516, 18662, 18748, 21364, 23653, 32809, 37324, 47306, 65317, 65618, 94612, 130634, 131236, 145297, 165571, 229663, 261268, 290594, 331142, 459326, 581188, 662284, 918652, 1017079, 2034158, 4068316, 7119553, 14239106, 28478212]

約数ペア:

[(1, 28478212), (2, 14239106), (4, 7119553), (7, 4068316), (14, 2034158), (28, 1017079), (31, 918652), (43, 662284), (49, 581188), (62, 459326), (86, 331142), (98, 290594), (109, 261268), (124, 229663), (172, 165571), (196, 145297), (217, 131236), (218, 130634), (301, 94612), (434, 65618), (436, 65317), (602, 47306), (763, 37324), (868, 32809), (1204, 23653), (1333, 21364), (1519, 18748), (1526, 18662), (2107, 13516), (2666, 10682), (3038, 9374), (3052, 9331), (3379, 8428), (4214, 6758), (4687, 6076), (5332, 5341)]