638094080

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1302

約数の個数: 144

約数和(自身を含む): 1700477184

約数和(自身を除く): 1062383104

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1237, 1240, 1280, 1612, 1664, 1984, 2015, 2080, 2474, 2480, 3224, 3328, 3968, 4030, 4160, 4948, 4960, 6185, 6448, 7936, 8060, 8320, 9896, 9920, 12370, 12896, 16081, 16120, 16640, 19792, 19840, 24740, 25792, 32162, 32240, 38347, 39584, 39680, 49480, 51584, 64324, 64480, 76694, 79168, 80405, 98960, 103168, 128648, 128960, 153388, 158336, 160810, 191735, 197920, 257296, 257920, 306776, 316672, 321620, 383470, 395840, 498511, 514592, 515840, 613552, 643240, 766940, 791680, 997022, 1029184, 1227104, 1286480, 1533880, 1583360, 1994044, 2058368, 2454208, 2492555, 2572960, 3067760, 3988088, 4116736, 4908416, 4985110, 5145920, 6135520, 7976176, 9816832, 9970220, 10291840, 12271040, 15952352, 19940440, 20583680, 24542080, 31904704, 39880880, 49084160, 63809408, 79761760, 127618816, 159523520, 319047040, 638094080]

約数ペア:

[(1, 638094080), (2, 319047040), (4, 159523520), (5, 127618816), (8, 79761760), (10, 63809408), (13, 49084160), (16, 39880880), (20, 31904704), (26, 24542080), (31, 20583680), (32, 19940440), (40, 15952352), (52, 12271040), (62, 10291840), (64, 9970220), (65, 9816832), (80, 7976176), (104, 6135520), (124, 5145920), (128, 4985110), (130, 4908416), (155, 4116736), (160, 3988088), (208, 3067760), (248, 2572960), (256, 2492555), (260, 2454208), (310, 2058368), (320, 1994044), (403, 1583360), (416, 1533880), (496, 1286480), (520, 1227104), (620, 1029184), (640, 997022), (806, 791680), (832, 766940), (992, 643240), (1040, 613552), (1237, 515840), (1240, 514592), (1280, 498511), (1612, 395840), (1664, 383470), (1984, 321620), (2015, 316672), (2080, 306776), (2474, 257920), (2480, 257296), (3224, 197920), (3328, 191735), (3968, 160810), (4030, 158336), (4160, 153388), (4948, 128960), (4960, 128648), (6185, 103168), (6448, 98960), (7936, 80405), (8060, 79168), (8320, 76694), (9896, 64480), (9920, 64324), (12370, 51584), (12896, 49480), (16081, 39680), (16120, 39584), (16640, 38347), (19792, 32240), (19840, 32162), (24740, 25792)]