21369990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{30971}}^1$

素因数の和:31004

約数の個数: 32

約数和(自身を含む): 53519616

約数和(自身を除く): 32149626

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 30971, 61942, 92913, 154855, 185826, 309710, 464565, 712333, 929130, 1424666, 2136999, 3561665, 4273998, 7123330, 10684995, 21369990]

約数ペア:

[(1, 21369990), (2, 10684995), (3, 7123330), (5, 4273998), (6, 3561665), (10, 2136999), (15, 1424666), (23, 929130), (30, 712333), (46, 464565), (69, 309710), (115, 185826), (138, 154855), (230, 92913), (345, 61942), (690, 30971)]