666194420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{7691}}^1$

素因数の和:7832

約数の個数: 48

約数和(自身を含む): 1442157696

約数和(自身を除く): 775963276

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 1220, 1420, 4331, 7691, 8662, 15382, 17324, 21655, 30764, 38455, 43310, 76910, 86620, 153820, 469151, 546061, 938302, 1092122, 1876604, 2184244, 2345755, 2730305, 4691510, 5460610, 9383020, 10921220, 33309721, 66619442, 133238884, 166548605, 333097210, 666194420]

約数ペア:

[(1, 666194420), (2, 333097210), (4, 166548605), (5, 133238884), (10, 66619442), (20, 33309721), (61, 10921220), (71, 9383020), (122, 5460610), (142, 4691510), (244, 2730305), (284, 2345755), (305, 2184244), (355, 1876604), (610, 1092122), (710, 938302), (1220, 546061), (1420, 469151), (4331, 153820), (7691, 86620), (8662, 76910), (15382, 43310), (17324, 38455), (21655, 30764)]