16868080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:266

約数の個数: 80

約数和(自身を含む): 42318720

約数和(自身を除く): 25450640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 79, 80, 85, 136, 157, 158, 170, 272, 314, 316, 340, 395, 628, 632, 680, 785, 790, 1256, 1264, 1343, 1360, 1570, 1580, 2512, 2669, 2686, 3140, 3160, 5338, 5372, 6280, 6320, 6715, 10676, 10744, 12403, 12560, 13345, 13430, 21352, 21488, 24806, 26690, 26860, 42704, 49612, 53380, 53720, 62015, 99224, 106760, 107440, 124030, 198448, 210851, 213520, 248060, 421702, 496120, 843404, 992240, 1054255, 1686808, 2108510, 3373616, 4217020, 8434040, 16868080]

約数ペア:

[(1, 16868080), (2, 8434040), (4, 4217020), (5, 3373616), (8, 2108510), (10, 1686808), (16, 1054255), (17, 992240), (20, 843404), (34, 496120), (40, 421702), (68, 248060), (79, 213520), (80, 210851), (85, 198448), (136, 124030), (157, 107440), (158, 106760), (170, 99224), (272, 62015), (314, 53720), (316, 53380), (340, 49612), (395, 42704), (628, 26860), (632, 26690), (680, 24806), (785, 21488), (790, 21352), (1256, 13430), (1264, 13345), (1343, 12560), (1360, 12403), (1570, 10744), (1580, 10676), (2512, 6715), (2669, 6320), (2686, 6280), (3140, 5372), (3160, 5338)]