256941516

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:192

約数の個数: 144

約数和(自身を含む): 691289088

約数和(自身を除く): 434347572

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 61, 62, 67, 78, 93, 122, 124, 134, 156, 169, 183, 186, 201, 244, 268, 338, 366, 372, 402, 403, 507, 676, 732, 793, 804, 806, 871, 1014, 1209, 1586, 1612, 1742, 1891, 2028, 2077, 2379, 2418, 2613, 3172, 3484, 3782, 4087, 4154, 4758, 4836, 5226, 5239, 5673, 6231, 7564, 8174, 8308, 9516, 10309, 10452, 10478, 11323, 11346, 12261, 12462, 15717, 16348, 20618, 20956, 22646, 22692, 24522, 24583, 24924, 27001, 30927, 31434, 33969, 41236, 45292, 49044, 49166, 53131, 54002, 61854, 62868, 67938, 73749, 81003, 98332, 106262, 108004, 123708, 126697, 135876, 147498, 159393, 162006, 212524, 253394, 294996, 318786, 319579, 324012, 351013, 380091, 506788, 637572, 639158, 690703, 702026, 760182, 958737, 1053039, 1278316, 1381406, 1404052, 1520364, 1647061, 1917474, 2072109, 2106078, 2762812, 3294122, 3834948, 4144218, 4212156, 4941183, 6588244, 8288436, 9882366, 19764732, 21411793, 42823586, 64235379, 85647172, 128470758, 256941516]

約数ペア:

[(1, 256941516), (2, 128470758), (3, 85647172), (4, 64235379), (6, 42823586), (12, 21411793), (13, 19764732), (26, 9882366), (31, 8288436), (39, 6588244), (52, 4941183), (61, 4212156), (62, 4144218), (67, 3834948), (78, 3294122), (93, 2762812), (122, 2106078), (124, 2072109), (134, 1917474), (156, 1647061), (169, 1520364), (183, 1404052), (186, 1381406), (201, 1278316), (244, 1053039), (268, 958737), (338, 760182), (366, 702026), (372, 690703), (402, 639158), (403, 637572), (507, 506788), (676, 380091), (732, 351013), (793, 324012), (804, 319579), (806, 318786), (871, 294996), (1014, 253394), (1209, 212524), (1586, 162006), (1612, 159393), (1742, 147498), (1891, 135876), (2028, 126697), (2077, 123708), (2379, 108004), (2418, 106262), (2613, 98332), (3172, 81003), (3484, 73749), (3782, 67938), (4087, 62868), (4154, 61854), (4758, 54002), (4836, 53131), (5226, 49166), (5239, 49044), (5673, 45292), (6231, 41236), (7564, 33969), (8174, 31434), (8308, 30927), (9516, 27001), (10309, 24924), (10452, 24583), (10478, 24522), (11323, 22692), (11346, 22646), (12261, 20956), (12462, 20618), (15717, 16348)]