2008120790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{2753}}^1$

素因数の和:2985

約数の個数: 64

約数和(自身を含む): 4041902592

約数和(自身を除く): 2033781802

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 181, 310, 362, 403, 806, 905, 1810, 2015, 2353, 2753, 4030, 4706, 5506, 5611, 11222, 11765, 13765, 23530, 27530, 28055, 35789, 56110, 71578, 72943, 85343, 145886, 170686, 178945, 357890, 364715, 426715, 498293, 729430, 853430, 996586, 1109459, 2218918, 2491465, 4982930, 5547295, 6477809, 11094590, 12955618, 15447083, 30894166, 32389045, 64778090, 77235415, 154470830, 200812079, 401624158, 1004060395, 2008120790]

約数ペア:

[(1, 2008120790), (2, 1004060395), (5, 401624158), (10, 200812079), (13, 154470830), (26, 77235415), (31, 64778090), (62, 32389045), (65, 30894166), (130, 15447083), (155, 12955618), (181, 11094590), (310, 6477809), (362, 5547295), (403, 4982930), (806, 2491465), (905, 2218918), (1810, 1109459), (2015, 996586), (2353, 853430), (2753, 729430), (4030, 498293), (4706, 426715), (5506, 364715), (5611, 357890), (11222, 178945), (11765, 170686), (13765, 145886), (23530, 85343), (27530, 72943), (28055, 71578), (35789, 56110)]