256235868

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:368

約数の個数: 144

約数和(自身を含む): 765506560

約数和(自身を除く): 509270692

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 79, 84, 122, 126, 158, 183, 211, 237, 244, 252, 316, 366, 422, 427, 474, 549, 553, 633, 711, 732, 844, 854, 948, 1098, 1106, 1266, 1281, 1422, 1477, 1659, 1708, 1899, 2196, 2212, 2532, 2562, 2844, 2954, 3318, 3798, 3843, 4431, 4819, 4977, 5124, 5908, 6636, 7596, 7686, 8862, 9638, 9954, 12871, 13293, 14457, 15372, 16669, 17724, 19276, 19908, 25742, 26586, 28914, 33338, 33733, 38613, 43371, 50007, 51484, 53172, 57828, 66676, 67466, 77226, 86742, 90097, 100014, 101199, 115839, 116683, 134932, 150021, 154452, 173484, 180194, 200028, 202398, 231678, 233366, 270291, 300042, 303597, 350049, 360388, 404796, 463356, 466732, 540582, 600084, 607194, 700098, 810873, 1016809, 1050147, 1081164, 1214388, 1400196, 1621746, 2033618, 2100294, 3050427, 3243492, 4067236, 4200588, 6100854, 7117663, 9151281, 12201708, 14235326, 18302562, 21352989, 28470652, 36605124, 42705978, 64058967, 85411956, 128117934, 256235868]

約数ペア:

[(1, 256235868), (2, 128117934), (3, 85411956), (4, 64058967), (6, 42705978), (7, 36605124), (9, 28470652), (12, 21352989), (14, 18302562), (18, 14235326), (21, 12201708), (28, 9151281), (36, 7117663), (42, 6100854), (61, 4200588), (63, 4067236), (79, 3243492), (84, 3050427), (122, 2100294), (126, 2033618), (158, 1621746), (183, 1400196), (211, 1214388), (237, 1081164), (244, 1050147), (252, 1016809), (316, 810873), (366, 700098), (422, 607194), (427, 600084), (474, 540582), (549, 466732), (553, 463356), (633, 404796), (711, 360388), (732, 350049), (844, 303597), (854, 300042), (948, 270291), (1098, 233366), (1106, 231678), (1266, 202398), (1281, 200028), (1422, 180194), (1477, 173484), (1659, 154452), (1708, 150021), (1899, 134932), (2196, 116683), (2212, 115839), (2532, 101199), (2562, 100014), (2844, 90097), (2954, 86742), (3318, 77226), (3798, 67466), (3843, 66676), (4431, 57828), (4819, 53172), (4977, 51484), (5124, 50007), (5908, 43371), (6636, 38613), (7596, 33733), (7686, 33338), (8862, 28914), (9638, 26586), (9954, 25742), (12871, 19908), (13293, 19276), (14457, 17724), (15372, 16669)]