19781090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23764510

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 107, 133, 139, 190, 214, 266, 278, 535, 665, 695, 749, 973, 1070, 1330, 1390, 1498, 1946, 2033, 2641, 3745, 4066, 4865, 5282, 7490, 9730, 10165, 13205, 14231, 14873, 18487, 20330, 26410, 28462, 29746, 36974, 71155, 74365, 92435, 104111, 142310, 148730, 184870, 208222, 282587, 520555, 565174, 1041110, 1412935, 1978109, 2825870, 3956218, 9890545, 19781090]

約数ペア:

[(1, 19781090), (2, 9890545), (5, 3956218), (7, 2825870), (10, 1978109), (14, 1412935), (19, 1041110), (35, 565174), (38, 520555), (70, 282587), (95, 208222), (107, 184870), (133, 148730), (139, 142310), (190, 104111), (214, 92435), (266, 74365), (278, 71155), (535, 36974), (665, 29746), (695, 28462), (749, 26410), (973, 20330), (1070, 18487), (1330, 14873), (1390, 14231), (1498, 13205), (1946, 10165), (2033, 9730), (2641, 7490), (3745, 5282), (4066, 4865)]