21683560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 52041600

約数和(自身を除く): 30358040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 103, 152, 190, 206, 277, 380, 412, 515, 554, 760, 824, 1030, 1108, 1385, 1957, 2060, 2216, 2770, 3914, 4120, 5263, 5540, 7828, 9785, 10526, 11080, 15656, 19570, 21052, 26315, 28531, 39140, 42104, 52630, 57062, 78280, 105260, 114124, 142655, 210520, 228248, 285310, 542089, 570620, 1084178, 1141240, 2168356, 2710445, 4336712, 5420890, 10841780, 21683560]

約数ペア:

[(1, 21683560), (2, 10841780), (4, 5420890), (5, 4336712), (8, 2710445), (10, 2168356), (19, 1141240), (20, 1084178), (38, 570620), (40, 542089), (76, 285310), (95, 228248), (103, 210520), (152, 142655), (190, 114124), (206, 105260), (277, 78280), (380, 57062), (412, 52630), (515, 42104), (554, 39140), (760, 28531), (824, 26315), (1030, 21052), (1108, 19570), (1385, 15656), (1957, 11080), (2060, 10526), (2216, 9785), (2770, 7828), (3914, 5540), (4120, 5263)]