20181250480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{383}}^1\times {\mathrm{21247}}^1$

素因数の和:21674

約数の個数: 80

約数和(自身を含む): 48563748864

約数和(自身を除く): 28382498384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 383, 496, 620, 766, 1240, 1532, 1915, 2480, 3064, 3830, 6128, 7660, 11873, 15320, 21247, 23746, 30640, 42494, 47492, 59365, 84988, 94984, 106235, 118730, 169976, 189968, 212470, 237460, 339952, 424940, 474920, 658657, 849880, 949840, 1317314, 1699760, 2634628, 3293285, 5269256, 6586570, 8137601, 10538512, 13173140, 16275202, 26346280, 32550404, 40688005, 52692560, 65100808, 81376010, 130201616, 162752020, 252265631, 325504040, 504531262, 651008080, 1009062524, 1261328155, 2018125048, 2522656310, 4036250096, 5045312620, 10090625240, 20181250480]

約数ペア:

[(1, 20181250480), (2, 10090625240), (4, 5045312620), (5, 4036250096), (8, 2522656310), (10, 2018125048), (16, 1261328155), (20, 1009062524), (31, 651008080), (40, 504531262), (62, 325504040), (80, 252265631), (124, 162752020), (155, 130201616), (248, 81376010), (310, 65100808), (383, 52692560), (496, 40688005), (620, 32550404), (766, 26346280), (1240, 16275202), (1532, 13173140), (1915, 10538512), (2480, 8137601), (3064, 6586570), (3830, 5269256), (6128, 3293285), (7660, 2634628), (11873, 1699760), (15320, 1317314), (21247, 949840), (23746, 849880), (30640, 658657), (42494, 474920), (47492, 424940), (59365, 339952), (84988, 237460), (94984, 212470), (106235, 189968), (118730, 169976)]