257553660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1172

約数の個数: 192

約数和(自身を含む): 909038592

約数和(自身を除く): 651484932

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 43, 52, 60, 65, 70, 78, 84, 86, 91, 105, 129, 130, 140, 156, 172, 182, 195, 210, 215, 258, 260, 273, 301, 364, 390, 420, 430, 455, 516, 546, 559, 602, 645, 780, 860, 903, 910, 1092, 1097, 1118, 1204, 1290, 1365, 1505, 1677, 1806, 1820, 2194, 2236, 2580, 2730, 2795, 3010, 3291, 3354, 3612, 3913, 4388, 4515, 5460, 5485, 5590, 6020, 6582, 6708, 7679, 7826, 8385, 9030, 10970, 11180, 11739, 13164, 14261, 15358, 15652, 16455, 16770, 18060, 19565, 21940, 23037, 23478, 28522, 30716, 32910, 33540, 38395, 39130, 42783, 46074, 46956, 47171, 57044, 58695, 65820, 71305, 76790, 78260, 85566, 92148, 94342, 99827, 115185, 117390, 141513, 142610, 153580, 171132, 188684, 199654, 213915, 230370, 234780, 235855, 283026, 285220, 299481, 330197, 399308, 427830, 460740, 471710, 499135, 566052, 598962, 613223, 660394, 707565, 855660, 943420, 990591, 998270, 1197924, 1226446, 1320788, 1415130, 1497405, 1650985, 1839669, 1981182, 1996540, 2452892, 2830260, 2994810, 3066115, 3301970, 3679338, 3962364, 4292561, 4952955, 5989620, 6132230, 6603940, 7358676, 8585122, 9198345, 9905910, 12264460, 12877683, 17170244, 18396690, 19811820, 21462805, 25755366, 36793380, 42925610, 51510732, 64388415, 85851220, 128776830, 257553660]

約数ペア:

[(1, 257553660), (2, 128776830), (3, 85851220), (4, 64388415), (5, 51510732), (6, 42925610), (7, 36793380), (10, 25755366), (12, 21462805), (13, 19811820), (14, 18396690), (15, 17170244), (20, 12877683), (21, 12264460), (26, 9905910), (28, 9198345), (30, 8585122), (35, 7358676), (39, 6603940), (42, 6132230), (43, 5989620), (52, 4952955), (60, 4292561), (65, 3962364), (70, 3679338), (78, 3301970), (84, 3066115), (86, 2994810), (91, 2830260), (105, 2452892), (129, 1996540), (130, 1981182), (140, 1839669), (156, 1650985), (172, 1497405), (182, 1415130), (195, 1320788), (210, 1226446), (215, 1197924), (258, 998270), (260, 990591), (273, 943420), (301, 855660), (364, 707565), (390, 660394), (420, 613223), (430, 598962), (455, 566052), (516, 499135), (546, 471710), (559, 460740), (602, 427830), (645, 399308), (780, 330197), (860, 299481), (903, 285220), (910, 283026), (1092, 235855), (1097, 234780), (1118, 230370), (1204, 213915), (1290, 199654), (1365, 188684), (1505, 171132), (1677, 153580), (1806, 142610), (1820, 141513), (2194, 117390), (2236, 115185), (2580, 99827), (2730, 94342), (2795, 92148), (3010, 85566), (3291, 78260), (3354, 76790), (3612, 71305), (3913, 65820), (4388, 58695), (4515, 57044), (5460, 47171), (5485, 46956), (5590, 46074), (6020, 42783), (6582, 39130), (6708, 38395), (7679, 33540), (7826, 32910), (8385, 30716), (9030, 28522), (10970, 23478), (11180, 23037), (11739, 21940), (13164, 19565), (14261, 18060), (15358, 16770), (15652, 16455)]