21389970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{14551}}^1$

素因数の和:14575

約数の個数: 48

約数和(自身を含む): 59721408

約数和(自身を除く): 38331438

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 14551, 29102, 43653, 72755, 87306, 101857, 145510, 203714, 218265, 305571, 436530, 509285, 611142, 712999, 1018570, 1425998, 1527855, 2138997, 3055710, 3564995, 4277994, 7129990, 10694985, 21389970]

約数ペア:

[(1, 21389970), (2, 10694985), (3, 7129990), (5, 4277994), (6, 3564995), (7, 3055710), (10, 2138997), (14, 1527855), (15, 1425998), (21, 1018570), (30, 712999), (35, 611142), (42, 509285), (49, 436530), (70, 305571), (98, 218265), (105, 203714), (147, 145510), (210, 101857), (245, 87306), (294, 72755), (490, 43653), (735, 29102), (1470, 14551)]