21167940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4969}}^1$

素因数の和:5052

約数の個数: 48

約数和(自身を含む): 60117120

約数和(自身を除く): 38949180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4969, 9938, 14907, 19876, 24845, 29814, 49690, 59628, 74535, 99380, 149070, 298140, 352799, 705598, 1058397, 1411196, 1763995, 2116794, 3527990, 4233588, 5291985, 7055980, 10583970, 21167940]

約数ペア:

[(1, 21167940), (2, 10583970), (3, 7055980), (4, 5291985), (5, 4233588), (6, 3527990), (10, 2116794), (12, 1763995), (15, 1411196), (20, 1058397), (30, 705598), (60, 352799), (71, 298140), (142, 149070), (213, 99380), (284, 74535), (355, 59628), (426, 49690), (710, 29814), (852, 24845), (1065, 19876), (1420, 14907), (2130, 9938), (4260, 4969)]