81121560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:525

約数の個数: 128

約数和(自身を含む): 264600000

約数和(自身を除く): 183478440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 149, 156, 195, 260, 298, 312, 349, 390, 447, 520, 596, 698, 745, 780, 894, 1047, 1192, 1396, 1490, 1560, 1745, 1788, 1937, 2094, 2235, 2792, 2980, 3490, 3576, 3874, 4188, 4470, 4537, 5235, 5811, 5960, 6980, 7748, 8376, 8940, 9074, 9685, 10470, 11622, 13611, 13960, 15496, 17880, 18148, 19370, 20940, 22685, 23244, 27222, 29055, 36296, 38740, 41880, 45370, 46488, 52001, 54444, 58110, 68055, 77480, 90740, 104002, 108888, 116220, 136110, 156003, 181480, 208004, 232440, 260005, 272220, 312006, 416008, 520010, 544440, 624012, 676013, 780015, 1040020, 1248024, 1352026, 1560030, 2028039, 2080040, 2704052, 3120060, 3380065, 4056078, 5408104, 6240120, 6760130, 8112156, 10140195, 13520260, 16224312, 20280390, 27040520, 40560780, 81121560]

約数ペア:

[(1, 81121560), (2, 40560780), (3, 27040520), (4, 20280390), (5, 16224312), (6, 13520260), (8, 10140195), (10, 8112156), (12, 6760130), (13, 6240120), (15, 5408104), (20, 4056078), (24, 3380065), (26, 3120060), (30, 2704052), (39, 2080040), (40, 2028039), (52, 1560030), (60, 1352026), (65, 1248024), (78, 1040020), (104, 780015), (120, 676013), (130, 624012), (149, 544440), (156, 520010), (195, 416008), (260, 312006), (298, 272220), (312, 260005), (349, 232440), (390, 208004), (447, 181480), (520, 156003), (596, 136110), (698, 116220), (745, 108888), (780, 104002), (894, 90740), (1047, 77480), (1192, 68055), (1396, 58110), (1490, 54444), (1560, 52001), (1745, 46488), (1788, 45370), (1937, 41880), (2094, 38740), (2235, 36296), (2792, 29055), (2980, 27222), (3490, 23244), (3576, 22685), (3874, 20940), (4188, 19370), (4470, 18148), (4537, 17880), (5235, 15496), (5811, 13960), (5960, 13611), (6980, 11622), (7748, 10470), (8376, 9685), (8940, 9074)]