20148555

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 38085120

約数和(自身を除く): 17936565

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 79, 105, 147, 237, 245, 347, 395, 553, 735, 1041, 1185, 1659, 1735, 2429, 2765, 3871, 5205, 7287, 8295, 11613, 12145, 17003, 19355, 27413, 36435, 51009, 58065, 82239, 85015, 137065, 191891, 255045, 411195, 575673, 959455, 1343237, 2878365, 4029711, 6716185, 20148555]

約数ペア:

[(1, 20148555), (3, 6716185), (5, 4029711), (7, 2878365), (15, 1343237), (21, 959455), (35, 575673), (49, 411195), (79, 255045), (105, 191891), (147, 137065), (237, 85015), (245, 82239), (347, 58065), (395, 51009), (553, 36435), (735, 27413), (1041, 19355), (1185, 17003), (1659, 12145), (1735, 11613), (2429, 8295), (2765, 7287), (3871, 5205)]