249763280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:245

約数の個数: 160

約数和(自身を含む): 661291008

約数和(自身を除く): 411527728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 61, 62, 65, 80, 104, 122, 124, 127, 130, 155, 208, 244, 248, 254, 260, 305, 310, 403, 488, 496, 508, 520, 610, 620, 635, 793, 806, 976, 1016, 1040, 1220, 1240, 1270, 1586, 1612, 1651, 1891, 2015, 2032, 2440, 2480, 2540, 3172, 3224, 3302, 3782, 3937, 3965, 4030, 4880, 5080, 6344, 6448, 6604, 7564, 7747, 7874, 7930, 8060, 8255, 9455, 10160, 12688, 13208, 15128, 15494, 15748, 15860, 16120, 16510, 18910, 19685, 24583, 26416, 30256, 30988, 31496, 31720, 32240, 33020, 37820, 38735, 39370, 49166, 51181, 61976, 62992, 63440, 66040, 75640, 77470, 78740, 98332, 100711, 102362, 122915, 123952, 132080, 151280, 154940, 157480, 196664, 201422, 204724, 240157, 245830, 255905, 309880, 314960, 393328, 402844, 409448, 480314, 491660, 503555, 511810, 619760, 805688, 818896, 960628, 983320, 1007110, 1023620, 1200785, 1611376, 1921256, 1966640, 2014220, 2047240, 2401570, 3122041, 3842512, 4028440, 4094480, 4803140, 6244082, 8056880, 9606280, 12488164, 15610205, 19212560, 24976328, 31220410, 49952656, 62440820, 124881640, 249763280]

約数ペア:

[(1, 249763280), (2, 124881640), (4, 62440820), (5, 49952656), (8, 31220410), (10, 24976328), (13, 19212560), (16, 15610205), (20, 12488164), (26, 9606280), (31, 8056880), (40, 6244082), (52, 4803140), (61, 4094480), (62, 4028440), (65, 3842512), (80, 3122041), (104, 2401570), (122, 2047240), (124, 2014220), (127, 1966640), (130, 1921256), (155, 1611376), (208, 1200785), (244, 1023620), (248, 1007110), (254, 983320), (260, 960628), (305, 818896), (310, 805688), (403, 619760), (488, 511810), (496, 503555), (508, 491660), (520, 480314), (610, 409448), (620, 402844), (635, 393328), (793, 314960), (806, 309880), (976, 255905), (1016, 245830), (1040, 240157), (1220, 204724), (1240, 201422), (1270, 196664), (1586, 157480), (1612, 154940), (1651, 151280), (1891, 132080), (2015, 123952), (2032, 122915), (2440, 102362), (2480, 100711), (2540, 98332), (3172, 78740), (3224, 77470), (3302, 75640), (3782, 66040), (3937, 63440), (3965, 62992), (4030, 61976), (4880, 51181), (5080, 49166), (6344, 39370), (6448, 38735), (6604, 37820), (7564, 33020), (7747, 32240), (7874, 31720), (7930, 31496), (8060, 30988), (8255, 30256), (9455, 26416), (10160, 24583), (12688, 19685), (13208, 18910), (15128, 16510), (15494, 16120), (15748, 15860)]