9959990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:165

約数の個数: 48

約数和(自身を含む): 19751040

約数和(自身を除く): 9791050

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 89, 95, 155, 178, 190, 310, 361, 445, 589, 722, 890, 1178, 1691, 1805, 2759, 2945, 3382, 3610, 5518, 5890, 8455, 11191, 13795, 16910, 22382, 27590, 32129, 52421, 55955, 64258, 104842, 111910, 160645, 262105, 321290, 524210, 995999, 1991998, 4979995, 9959990]

約数ペア:

[(1, 9959990), (2, 4979995), (5, 1991998), (10, 995999), (19, 524210), (31, 321290), (38, 262105), (62, 160645), (89, 111910), (95, 104842), (155, 64258), (178, 55955), (190, 52421), (310, 32129), (361, 27590), (445, 22382), (589, 16910), (722, 13795), (890, 11191), (1178, 8455), (1691, 5890), (1805, 5518), (2759, 3610), (2945, 3382)]