128002820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{617}}^1$

素因数の和:701

約数の個数: 96

約数和(自身を含む): 313963776

約数和(自身を除く): 185960956

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 41, 44, 46, 55, 82, 92, 110, 115, 164, 205, 220, 230, 253, 410, 451, 460, 506, 617, 820, 902, 943, 1012, 1234, 1265, 1804, 1886, 2255, 2468, 2530, 3085, 3772, 4510, 4715, 5060, 6170, 6787, 9020, 9430, 10373, 12340, 13574, 14191, 18860, 20746, 25297, 27148, 28382, 33935, 41492, 50594, 51865, 56764, 67870, 70955, 101188, 103730, 126485, 135740, 141910, 156101, 207460, 252970, 278267, 283820, 312202, 505940, 556534, 581831, 624404, 780505, 1113068, 1163662, 1391335, 1561010, 2327324, 2782670, 2909155, 3122020, 5565340, 5818310, 6400141, 11636620, 12800282, 25600564, 32000705, 64001410, 128002820]

約数ペア:

[(1, 128002820), (2, 64001410), (4, 32000705), (5, 25600564), (10, 12800282), (11, 11636620), (20, 6400141), (22, 5818310), (23, 5565340), (41, 3122020), (44, 2909155), (46, 2782670), (55, 2327324), (82, 1561010), (92, 1391335), (110, 1163662), (115, 1113068), (164, 780505), (205, 624404), (220, 581831), (230, 556534), (253, 505940), (410, 312202), (451, 283820), (460, 278267), (506, 252970), (617, 207460), (820, 156101), (902, 141910), (943, 135740), (1012, 126485), (1234, 103730), (1265, 101188), (1804, 70955), (1886, 67870), (2255, 56764), (2468, 51865), (2530, 50594), (3085, 41492), (3772, 33935), (4510, 28382), (4715, 27148), (5060, 25297), (6170, 20746), (6787, 18860), (9020, 14191), (9430, 13574), (10373, 12340)]