28493960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2089}}^1$

素因数の和:2142

約数の個数: 64

約数和(自身を含む): 72230400

約数和(自身を除く): 43736440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2089, 2728, 3410, 4178, 6820, 8356, 10445, 13640, 16712, 20890, 22979, 41780, 45958, 64759, 83560, 91916, 114895, 129518, 183832, 229790, 259036, 323795, 459580, 518072, 647590, 712349, 919160, 1295180, 1424698, 2590360, 2849396, 3561745, 5698792, 7123490, 14246980, 28493960]

約数ペア:

[(1, 28493960), (2, 14246980), (4, 7123490), (5, 5698792), (8, 3561745), (10, 2849396), (11, 2590360), (20, 1424698), (22, 1295180), (31, 919160), (40, 712349), (44, 647590), (55, 518072), (62, 459580), (88, 323795), (110, 259036), (124, 229790), (155, 183832), (220, 129518), (248, 114895), (310, 91916), (341, 83560), (440, 64759), (620, 45958), (682, 41780), (1240, 22979), (1364, 20890), (1705, 16712), (2089, 13640), (2728, 10445), (3410, 8356), (4178, 6820)]