81640280

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^2\times {\mathrm{383}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 186727680

約数和(自身を除く): 105087400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 383, 584, 730, 766, 1460, 1532, 1915, 2920, 3064, 3830, 5329, 7660, 10658, 15320, 21316, 26645, 27959, 42632, 53290, 55918, 106580, 111836, 139795, 213160, 223672, 279590, 559180, 1118360, 2041007, 4082014, 8164028, 10205035, 16328056, 20410070, 40820140, 81640280]

約数ペア:

[(1, 81640280), (2, 40820140), (4, 20410070), (5, 16328056), (8, 10205035), (10, 8164028), (20, 4082014), (40, 2041007), (73, 1118360), (146, 559180), (292, 279590), (365, 223672), (383, 213160), (584, 139795), (730, 111836), (766, 106580), (1460, 55918), (1532, 53290), (1915, 42632), (2920, 27959), (3064, 26645), (3830, 21316), (5329, 15320), (7660, 10658)]