261799308

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{1291}}^1$

素因数の和:1475

約数の個数: 72

約数和(自身を含む): 682858176

約数和(自身を除く): 421058868

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 131, 172, 258, 262, 387, 393, 516, 524, 774, 786, 1179, 1291, 1548, 1572, 2358, 2582, 3873, 4716, 5164, 5633, 7746, 11266, 11619, 15492, 16899, 22532, 23238, 33798, 46476, 50697, 55513, 67596, 101394, 111026, 166539, 169121, 202788, 222052, 333078, 338242, 499617, 507363, 666156, 676484, 999234, 1014726, 1522089, 1998468, 2029452, 3044178, 6088356, 7272203, 14544406, 21816609, 29088812, 43633218, 65449827, 87266436, 130899654, 261799308]

約数ペア:

[(1, 261799308), (2, 130899654), (3, 87266436), (4, 65449827), (6, 43633218), (9, 29088812), (12, 21816609), (18, 14544406), (36, 7272203), (43, 6088356), (86, 3044178), (129, 2029452), (131, 1998468), (172, 1522089), (258, 1014726), (262, 999234), (387, 676484), (393, 666156), (516, 507363), (524, 499617), (774, 338242), (786, 333078), (1179, 222052), (1291, 202788), (1548, 169121), (1572, 166539), (2358, 111026), (2582, 101394), (3873, 67596), (4716, 55513), (5164, 50697), (5633, 46476), (7746, 33798), (11266, 23238), (11619, 22532), (15492, 16899)]