1239728520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{2861}}^1$

素因数の和:3055

約数の個数: 128

約数和(自身を含む): 3906973440

約数和(自身を除く): 2667244920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 157, 184, 230, 276, 314, 345, 460, 471, 552, 628, 690, 785, 920, 942, 1256, 1380, 1570, 1884, 2355, 2760, 2861, 3140, 3611, 3768, 4710, 5722, 6280, 7222, 8583, 9420, 10833, 11444, 14305, 14444, 17166, 18055, 18840, 21666, 22888, 28610, 28888, 34332, 36110, 42915, 43332, 54165, 57220, 65803, 68664, 72220, 85830, 86664, 108330, 114440, 131606, 144440, 171660, 197409, 216660, 263212, 329015, 343320, 394818, 433320, 449177, 526424, 658030, 789636, 898354, 987045, 1316060, 1347531, 1579272, 1796708, 1974090, 2245885, 2632120, 2695062, 3593416, 3948180, 4491770, 5390124, 6737655, 7896360, 8983540, 10331071, 10780248, 13475310, 17967080, 20662142, 26950620, 30993213, 41324284, 51655355, 53901240, 61986426, 82648568, 103310710, 123972852, 154966065, 206621420, 247945704, 309932130, 413242840, 619864260, 1239728520]

約数ペア:

[(1, 1239728520), (2, 619864260), (3, 413242840), (4, 309932130), (5, 247945704), (6, 206621420), (8, 154966065), (10, 123972852), (12, 103310710), (15, 82648568), (20, 61986426), (23, 53901240), (24, 51655355), (30, 41324284), (40, 30993213), (46, 26950620), (60, 20662142), (69, 17967080), (92, 13475310), (115, 10780248), (120, 10331071), (138, 8983540), (157, 7896360), (184, 6737655), (230, 5390124), (276, 4491770), (314, 3948180), (345, 3593416), (460, 2695062), (471, 2632120), (552, 2245885), (628, 1974090), (690, 1796708), (785, 1579272), (920, 1347531), (942, 1316060), (1256, 987045), (1380, 898354), (1570, 789636), (1884, 658030), (2355, 526424), (2760, 449177), (2861, 433320), (3140, 394818), (3611, 343320), (3768, 329015), (4710, 263212), (5722, 216660), (6280, 197409), (7222, 171660), (8583, 144440), (9420, 131606), (10833, 114440), (11444, 108330), (14305, 86664), (14444, 85830), (17166, 72220), (18055, 68664), (18840, 65803), (21666, 57220), (22888, 54165), (28610, 43332), (28888, 42915), (34332, 36110)]