18017320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 43228800

約数和(自身を除く): 25211480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 151, 152, 157, 190, 302, 314, 380, 604, 628, 755, 760, 785, 1208, 1256, 1510, 1570, 2869, 2983, 3020, 3140, 5738, 5966, 6040, 6280, 11476, 11932, 14345, 14915, 22952, 23707, 23864, 28690, 29830, 47414, 57380, 59660, 94828, 114760, 118535, 119320, 189656, 237070, 450433, 474140, 900866, 948280, 1801732, 2252165, 3603464, 4504330, 9008660, 18017320]

約数ペア:

[(1, 18017320), (2, 9008660), (4, 4504330), (5, 3603464), (8, 2252165), (10, 1801732), (19, 948280), (20, 900866), (38, 474140), (40, 450433), (76, 237070), (95, 189656), (151, 119320), (152, 118535), (157, 114760), (190, 94828), (302, 59660), (314, 57380), (380, 47414), (604, 29830), (628, 28690), (755, 23864), (760, 23707), (785, 22952), (1208, 14915), (1256, 14345), (1510, 11932), (1570, 11476), (2869, 6280), (2983, 6040), (3020, 5966), (3140, 5738)]