2121340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 4939200

約数和(自身を除く): 2817860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 199, 205, 260, 398, 410, 533, 796, 820, 995, 1066, 1990, 2132, 2587, 2665, 3980, 5174, 5330, 8159, 10348, 10660, 12935, 16318, 25870, 32636, 40795, 51740, 81590, 106067, 163180, 212134, 424268, 530335, 1060670, 2121340]

約数ペア:

[(1, 2121340), (2, 1060670), (4, 530335), (5, 424268), (10, 212134), (13, 163180), (20, 106067), (26, 81590), (41, 51740), (52, 40795), (65, 32636), (82, 25870), (130, 16318), (164, 12935), (199, 10660), (205, 10348), (260, 8159), (398, 5330), (410, 5174), (533, 3980), (796, 2665), (820, 2587), (995, 2132), (1066, 1990)]