20197869860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{344321}}^1$

素因数の和:344756

約数の個数: 48

約数和(自身を含む): 48590720640

約数和(自身を除く): 28392850780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 419, 838, 1676, 2095, 2933, 4190, 5866, 8380, 11732, 14665, 29330, 58660, 344321, 688642, 1377284, 1721605, 2410247, 3443210, 4820494, 6886420, 9640988, 12051235, 24102470, 48204940, 144270499, 288540998, 577081996, 721352495, 1009893493, 1442704990, 2019786986, 2885409980, 4039573972, 5049467465, 10098934930, 20197869860]

約数ペア:

[(1, 20197869860), (2, 10098934930), (4, 5049467465), (5, 4039573972), (7, 2885409980), (10, 2019786986), (14, 1442704990), (20, 1009893493), (28, 721352495), (35, 577081996), (70, 288540998), (140, 144270499), (419, 48204940), (838, 24102470), (1676, 12051235), (2095, 9640988), (2933, 6886420), (4190, 4820494), (5866, 3443210), (8380, 2410247), (11732, 1721605), (14665, 1377284), (29330, 688642), (58660, 344321)]