89877980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13913}}^1$

素因数の和:13958

約数の個数: 48

約数和(自身を含む): 210379680

約数和(自身を除く): 120501700

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 13913, 27826, 55652, 69565, 139130, 236521, 264347, 278260, 473042, 528694, 946084, 1057388, 1182605, 1321735, 2365210, 2643470, 4493899, 4730420, 5286940, 8987798, 17975596, 22469495, 44938990, 89877980]

約数ペア:

[(1, 89877980), (2, 44938990), (4, 22469495), (5, 17975596), (10, 8987798), (17, 5286940), (19, 4730420), (20, 4493899), (34, 2643470), (38, 2365210), (68, 1321735), (76, 1182605), (85, 1057388), (95, 946084), (170, 528694), (190, 473042), (323, 278260), (340, 264347), (380, 236521), (646, 139130), (1292, 69565), (1615, 55652), (3230, 27826), (6460, 13913)]