20613980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1093}}^1$

素因数の和:1166

約数の個数: 48

約数和(自身を含む): 46315584

約数和(自身を除く): 25701604

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 115, 164, 205, 230, 410, 460, 820, 943, 1093, 1886, 2186, 3772, 4372, 4715, 5465, 9430, 10930, 18860, 21860, 25139, 44813, 50278, 89626, 100556, 125695, 179252, 224065, 251390, 448130, 502780, 896260, 1030699, 2061398, 4122796, 5153495, 10306990, 20613980]

約数ペア:

[(1, 20613980), (2, 10306990), (4, 5153495), (5, 4122796), (10, 2061398), (20, 1030699), (23, 896260), (41, 502780), (46, 448130), (82, 251390), (92, 224065), (115, 179252), (164, 125695), (205, 100556), (230, 89626), (410, 50278), (460, 44813), (820, 25139), (943, 21860), (1093, 18860), (1886, 10930), (2186, 9430), (3772, 5465), (4372, 4715)]