20577130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{61}}^2\times {\mathrm{79}}^1$

素因数の和:215

約数の個数: 48

約数和(自身を含む): 43580160

約数和(自身を除く): 23003030

約数列:

[1, 2, 5, 7, 10, 14, 35, 61, 70, 79, 122, 158, 305, 395, 427, 553, 610, 790, 854, 1106, 2135, 2765, 3721, 4270, 4819, 5530, 7442, 9638, 18605, 24095, 26047, 33733, 37210, 48190, 52094, 67466, 130235, 168665, 260470, 293959, 337330, 587918, 1469795, 2057713, 2939590, 4115426, 10288565, 20577130]

約数ペア:

[(1, 20577130), (2, 10288565), (5, 4115426), (7, 2939590), (10, 2057713), (14, 1469795), (35, 587918), (61, 337330), (70, 293959), (79, 260470), (122, 168665), (158, 130235), (305, 67466), (395, 52094), (427, 48190), (553, 37210), (610, 33733), (790, 26047), (854, 24095), (1106, 18605), (2135, 9638), (2765, 7442), (3721, 5530), (4270, 4819)]