12561378560

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{316567}}^1$

素因数の和:316619

約数の個数: 72

約数和(自身を含む): 31059119616

約数和(自身を除く): 18497741056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 316567, 633134, 1266268, 1582835, 2532536, 3165670, 5065072, 6331340, 9813577, 10130144, 12662680, 19627154, 20260288, 25325360, 39254308, 40520576, 49067885, 50650720, 78508616, 81041152, 98135770, 101301440, 157017232, 196271540, 202602880, 314034464, 392543080, 405205760, 628068928, 785086160, 1256137856, 1570172320, 2512275712, 3140344640, 6280689280, 12561378560]

約数ペア:

[(1, 12561378560), (2, 6280689280), (4, 3140344640), (5, 2512275712), (8, 1570172320), (10, 1256137856), (16, 785086160), (20, 628068928), (31, 405205760), (32, 392543080), (40, 314034464), (62, 202602880), (64, 196271540), (80, 157017232), (124, 101301440), (128, 98135770), (155, 81041152), (160, 78508616), (248, 50650720), (256, 49067885), (310, 40520576), (320, 39254308), (496, 25325360), (620, 20260288), (640, 19627154), (992, 12662680), (1240, 10130144), (1280, 9813577), (1984, 6331340), (2480, 5065072), (3968, 3165670), (4960, 2532536), (7936, 1582835), (9920, 1266268), (19840, 633134), (39680, 316567)]