19558120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 45904320

約数和(自身を除く): 26346200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 83, 86, 137, 166, 172, 215, 274, 332, 344, 415, 430, 548, 664, 685, 830, 860, 1096, 1370, 1660, 1720, 2740, 3320, 3569, 5480, 5891, 7138, 11371, 11782, 14276, 17845, 22742, 23564, 28552, 29455, 35690, 45484, 47128, 56855, 58910, 71380, 90968, 113710, 117820, 142760, 227420, 235640, 454840, 488953, 977906, 1955812, 2444765, 3911624, 4889530, 9779060, 19558120]

約数ペア:

[(1, 19558120), (2, 9779060), (4, 4889530), (5, 3911624), (8, 2444765), (10, 1955812), (20, 977906), (40, 488953), (43, 454840), (83, 235640), (86, 227420), (137, 142760), (166, 117820), (172, 113710), (215, 90968), (274, 71380), (332, 58910), (344, 56855), (415, 47128), (430, 45484), (548, 35690), (664, 29455), (685, 28552), (830, 23564), (860, 22742), (1096, 17845), (1370, 14276), (1660, 11782), (1720, 11371), (2740, 7138), (3320, 5891), (3569, 5480)]