28157360

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{653}}^1$

素因数の和:691

約数の個数: 120

約数和(自身を含む): 83204496

約数和(自身を除く): 55047136

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 560, 616, 653, 770, 784, 880, 980, 1078, 1232, 1306, 1540, 1960, 2156, 2612, 2695, 3080, 3265, 3920, 4312, 4571, 5224, 5390, 6160, 6530, 7183, 8624, 9142, 10448, 10780, 13060, 14366, 18284, 21560, 22855, 26120, 28732, 31997, 35915, 36568, 43120, 45710, 50281, 52240, 57464, 63994, 71830, 73136, 91420, 100562, 114928, 127988, 143660, 159985, 182840, 201124, 251405, 255976, 287320, 319970, 351967, 365680, 402248, 502810, 511952, 574640, 639940, 703934, 804496, 1005620, 1279880, 1407868, 1759835, 2011240, 2559760, 2815736, 3519670, 4022480, 5631472, 7039340, 14078680, 28157360]

約数ペア:

[(1, 28157360), (2, 14078680), (4, 7039340), (5, 5631472), (7, 4022480), (8, 3519670), (10, 2815736), (11, 2559760), (14, 2011240), (16, 1759835), (20, 1407868), (22, 1279880), (28, 1005620), (35, 804496), (40, 703934), (44, 639940), (49, 574640), (55, 511952), (56, 502810), (70, 402248), (77, 365680), (80, 351967), (88, 319970), (98, 287320), (110, 255976), (112, 251405), (140, 201124), (154, 182840), (176, 159985), (196, 143660), (220, 127988), (245, 114928), (280, 100562), (308, 91420), (385, 73136), (392, 71830), (440, 63994), (490, 57464), (539, 52240), (560, 50281), (616, 45710), (653, 43120), (770, 36568), (784, 35915), (880, 31997), (980, 28732), (1078, 26120), (1232, 22855), (1306, 21560), (1540, 18284), (1960, 14366), (2156, 13060), (2612, 10780), (2695, 10448), (3080, 9142), (3265, 8624), (3920, 7183), (4312, 6530), (4571, 6160), (5224, 5390)]