28520388

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:581

約数の個数: 72

約数和(自身を含む): 78351000

約数和(自身を除く): 49830612

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 149, 156, 234, 298, 409, 447, 468, 596, 818, 894, 1227, 1341, 1636, 1788, 1937, 2454, 2682, 3681, 3874, 4908, 5317, 5364, 5811, 7362, 7748, 10634, 11622, 14724, 15951, 17433, 21268, 23244, 31902, 34866, 47853, 60941, 63804, 69732, 95706, 121882, 182823, 191412, 243764, 365646, 548469, 731292, 792233, 1096938, 1584466, 2193876, 2376699, 3168932, 4753398, 7130097, 9506796, 14260194, 28520388]

約数ペア:

[(1, 28520388), (2, 14260194), (3, 9506796), (4, 7130097), (6, 4753398), (9, 3168932), (12, 2376699), (13, 2193876), (18, 1584466), (26, 1096938), (36, 792233), (39, 731292), (52, 548469), (78, 365646), (117, 243764), (149, 191412), (156, 182823), (234, 121882), (298, 95706), (409, 69732), (447, 63804), (468, 60941), (596, 47853), (818, 34866), (894, 31902), (1227, 23244), (1341, 21268), (1636, 17433), (1788, 15951), (1937, 14724), (2454, 11622), (2682, 10634), (3681, 7748), (3874, 7362), (4908, 5811), (5317, 5364)]