745021540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{17987}}^1$

素因数の和:18124

約数の個数: 48

約数和(自身を含む): 1662091200

約数和(自身を除く): 917069660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 1090, 2071, 2180, 4142, 8284, 10355, 17987, 20710, 35974, 41420, 71948, 89935, 179870, 341753, 359740, 683506, 1367012, 1708765, 1960583, 3417530, 3921166, 6835060, 7842332, 9802915, 19605830, 37251077, 39211660, 74502154, 149004308, 186255385, 372510770, 745021540]

約数ペア:

[(1, 745021540), (2, 372510770), (4, 186255385), (5, 149004308), (10, 74502154), (19, 39211660), (20, 37251077), (38, 19605830), (76, 9802915), (95, 7842332), (109, 6835060), (190, 3921166), (218, 3417530), (380, 1960583), (436, 1708765), (545, 1367012), (1090, 683506), (2071, 359740), (2180, 341753), (4142, 179870), (8284, 89935), (10355, 71948), (17987, 41420), (20710, 35974)]