128470580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31643}}^1$

素因数の和:31688

約数の個数: 48

約数和(自身を含む): 318971520

約数和(自身を除く): 190500940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 31643, 63286, 126572, 158215, 221501, 316430, 443002, 632860, 886004, 917647, 1107505, 1835294, 2215010, 3670588, 4430020, 4588235, 6423529, 9176470, 12847058, 18352940, 25694116, 32117645, 64235290, 128470580]

約数ペア:

[(1, 128470580), (2, 64235290), (4, 32117645), (5, 25694116), (7, 18352940), (10, 12847058), (14, 9176470), (20, 6423529), (28, 4588235), (29, 4430020), (35, 3670588), (58, 2215010), (70, 1835294), (116, 1107505), (140, 917647), (145, 886004), (203, 632860), (290, 443002), (406, 316430), (580, 221501), (812, 158215), (1015, 126572), (2030, 63286), (4060, 31643)]