19490840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28663}}^1$

素因数の和:28691

約数の個数: 32

約数和(自身を含む): 46435680

約数和(自身を除く): 26944840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 28663, 57326, 114652, 143315, 229304, 286630, 487271, 573260, 974542, 1146520, 1949084, 2436355, 3898168, 4872710, 9745420, 19490840]

約数ペア:

[(1, 19490840), (2, 9745420), (4, 4872710), (5, 3898168), (8, 2436355), (10, 1949084), (17, 1146520), (20, 974542), (34, 573260), (40, 487271), (68, 286630), (85, 229304), (136, 143315), (170, 114652), (340, 57326), (680, 28663)]