20403990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{9857}}^1$

素因数の和:9893

約数の個数: 48

約数和(自身を含む): 55362528

約数和(自身を除く): 34958538

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 414, 690, 1035, 2070, 9857, 19714, 29571, 49285, 59142, 88713, 98570, 147855, 177426, 226711, 295710, 443565, 453422, 680133, 887130, 1133555, 1360266, 2040399, 2267110, 3400665, 4080798, 6801330, 10201995, 20403990]

約数ペア:

[(1, 20403990), (2, 10201995), (3, 6801330), (5, 4080798), (6, 3400665), (9, 2267110), (10, 2040399), (15, 1360266), (18, 1133555), (23, 887130), (30, 680133), (45, 453422), (46, 443565), (69, 295710), (90, 226711), (115, 177426), (138, 147855), (207, 98570), (230, 88713), (345, 59142), (414, 49285), (690, 29571), (1035, 19714), (2070, 9857)]