100721840

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{15937}}^1$

素因数の和:16029

約数の個数: 40

約数和(自身を含む): 237157440

約数和(自身を除く): 136435600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 15937, 31874, 63748, 79685, 127496, 159370, 254992, 318740, 637480, 1259023, 1274960, 2518046, 5036092, 6295115, 10072184, 12590230, 20144368, 25180460, 50360920, 100721840]

約数ペア:

[(1, 100721840), (2, 50360920), (4, 25180460), (5, 20144368), (8, 12590230), (10, 10072184), (16, 6295115), (20, 5036092), (40, 2518046), (79, 1274960), (80, 1259023), (158, 637480), (316, 318740), (395, 254992), (632, 159370), (790, 127496), (1264, 79685), (1580, 63748), (3160, 31874), (6320, 15937)]