205554440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:559

約数の個数: 128

約数和(自身を含む): 574560000

約数和(自身を除く): 369005560

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 149, 182, 260, 280, 298, 364, 379, 455, 520, 596, 728, 745, 758, 910, 1043, 1192, 1490, 1516, 1820, 1895, 1937, 2086, 2653, 2980, 3032, 3640, 3790, 3874, 4172, 4927, 5215, 5306, 5960, 7580, 7748, 8344, 9685, 9854, 10430, 10612, 13265, 13559, 15160, 15496, 19370, 19708, 20860, 21224, 24635, 26530, 27118, 34489, 38740, 39416, 41720, 49270, 53060, 54236, 56471, 67795, 68978, 77480, 98540, 106120, 108472, 112942, 135590, 137956, 172445, 197080, 225884, 271180, 275912, 282355, 344890, 395297, 451768, 542360, 564710, 689780, 734123, 790594, 1129420, 1379560, 1468246, 1581188, 1976485, 2258840, 2936492, 3162376, 3670615, 3952970, 5138861, 5872984, 7341230, 7905940, 10277722, 14682460, 15811880, 20555444, 25694305, 29364920, 41110888, 51388610, 102777220, 205554440]

約数ペア:

[(1, 205554440), (2, 102777220), (4, 51388610), (5, 41110888), (7, 29364920), (8, 25694305), (10, 20555444), (13, 15811880), (14, 14682460), (20, 10277722), (26, 7905940), (28, 7341230), (35, 5872984), (40, 5138861), (52, 3952970), (56, 3670615), (65, 3162376), (70, 2936492), (91, 2258840), (104, 1976485), (130, 1581188), (140, 1468246), (149, 1379560), (182, 1129420), (260, 790594), (280, 734123), (298, 689780), (364, 564710), (379, 542360), (455, 451768), (520, 395297), (596, 344890), (728, 282355), (745, 275912), (758, 271180), (910, 225884), (1043, 197080), (1192, 172445), (1490, 137956), (1516, 135590), (1820, 112942), (1895, 108472), (1937, 106120), (2086, 98540), (2653, 77480), (2980, 68978), (3032, 67795), (3640, 56471), (3790, 54236), (3874, 53060), (4172, 49270), (4927, 41720), (5215, 39416), (5306, 38740), (5960, 34489), (7580, 27118), (7748, 26530), (8344, 24635), (9685, 21224), (9854, 20860), (10430, 19708), (10612, 19370), (13265, 15496), (13559, 15160)]