19665940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8263}}^1$

素因数の和:8296

約数の個数: 48

約数和(自身を含む): 49980672

約数和(自身を除く): 30314732

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8263, 16526, 33052, 41315, 57841, 82630, 115682, 140471, 165260, 231364, 280942, 289205, 561884, 578410, 702355, 983297, 1156820, 1404710, 1966594, 2809420, 3933188, 4916485, 9832970, 19665940]

約数ペア:

[(1, 19665940), (2, 9832970), (4, 4916485), (5, 3933188), (7, 2809420), (10, 1966594), (14, 1404710), (17, 1156820), (20, 983297), (28, 702355), (34, 578410), (35, 561884), (68, 289205), (70, 280942), (85, 231364), (119, 165260), (140, 140471), (170, 115682), (238, 82630), (340, 57841), (476, 41315), (595, 33052), (1190, 16526), (2380, 8263)]