18965202060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6450749}}^1$

素因数の和:6450775

約数の個数: 72

約数和(自身を含む): 61772382000

約数和(自身を除く): 42807179940

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6450749, 12901498, 19352247, 25802996, 32253745, 38704494, 45155243, 64507490, 77408988, 90310486, 96761235, 129014980, 135465729, 180620972, 193522470, 225776215, 270931458, 316086701, 387044940, 451552430, 541862916, 632173402, 677328645, 903104860, 948260103, 1264346804, 1354657290, 1580433505, 1896520206, 2709314580, 3160867010, 3793040412, 4741300515, 6321734020, 9482601030, 18965202060]

約数ペア:

[(1, 18965202060), (2, 9482601030), (3, 6321734020), (4, 4741300515), (5, 3793040412), (6, 3160867010), (7, 2709314580), (10, 1896520206), (12, 1580433505), (14, 1354657290), (15, 1264346804), (20, 948260103), (21, 903104860), (28, 677328645), (30, 632173402), (35, 541862916), (42, 451552430), (49, 387044940), (60, 316086701), (70, 270931458), (84, 225776215), (98, 193522470), (105, 180620972), (140, 135465729), (147, 129014980), (196, 96761235), (210, 90310486), (245, 77408988), (294, 64507490), (420, 45155243), (490, 38704494), (588, 32253745), (735, 25802996), (980, 19352247), (1470, 12901498), (2940, 6450749)]