257001966

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:622

約数の個数: 96

約数和(自身を含む): 628992000

約数和(自身を除く): 371990034

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 71, 78, 93, 117, 142, 186, 213, 234, 279, 403, 426, 499, 558, 639, 806, 923, 998, 1209, 1278, 1497, 1846, 2201, 2418, 2769, 2994, 3627, 4402, 4491, 5538, 6487, 6603, 7254, 8307, 8982, 12974, 13206, 15469, 16614, 19461, 19809, 28613, 30938, 35429, 38922, 39618, 46407, 57226, 58383, 70858, 85839, 92814, 106287, 116766, 139221, 171678, 201097, 212574, 257517, 278442, 318861, 402194, 460577, 515034, 603291, 637722, 921154, 1098299, 1206582, 1381731, 1809873, 2196598, 2763462, 3294897, 3619746, 4145193, 6589794, 8290386, 9884691, 14277887, 19769382, 28555774, 42833661, 85667322, 128500983, 257001966]

約数ペア:

[(1, 257001966), (2, 128500983), (3, 85667322), (6, 42833661), (9, 28555774), (13, 19769382), (18, 14277887), (26, 9884691), (31, 8290386), (39, 6589794), (62, 4145193), (71, 3619746), (78, 3294897), (93, 2763462), (117, 2196598), (142, 1809873), (186, 1381731), (213, 1206582), (234, 1098299), (279, 921154), (403, 637722), (426, 603291), (499, 515034), (558, 460577), (639, 402194), (806, 318861), (923, 278442), (998, 257517), (1209, 212574), (1278, 201097), (1497, 171678), (1846, 139221), (2201, 116766), (2418, 106287), (2769, 92814), (2994, 85839), (3627, 70858), (4402, 58383), (4491, 57226), (5538, 46407), (6487, 39618), (6603, 38922), (7254, 35429), (8307, 30938), (8982, 28613), (12974, 19809), (13206, 19461), (15469, 16614)]