639318498

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61627}}^1$

素因数の和:61671

約数の個数: 64

約数和(自身を含む): 1656560640

約数和(自身を除く): 1017242142

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 26, 38, 39, 42, 57, 78, 91, 114, 133, 182, 247, 266, 273, 399, 494, 546, 741, 798, 1482, 1729, 3458, 5187, 10374, 61627, 123254, 184881, 369762, 431389, 801151, 862778, 1170913, 1294167, 1602302, 2341826, 2403453, 2588334, 3512739, 4806906, 5608057, 7025478, 8196391, 11216114, 15221869, 16392782, 16824171, 24589173, 30443738, 33648342, 45665607, 49178346, 91331214, 106553083, 213106166, 319659249, 639318498]

約数ペア:

[(1, 639318498), (2, 319659249), (3, 213106166), (6, 106553083), (7, 91331214), (13, 49178346), (14, 45665607), (19, 33648342), (21, 30443738), (26, 24589173), (38, 16824171), (39, 16392782), (42, 15221869), (57, 11216114), (78, 8196391), (91, 7025478), (114, 5608057), (133, 4806906), (182, 3512739), (247, 2588334), (266, 2403453), (273, 2341826), (399, 1602302), (494, 1294167), (546, 1170913), (741, 862778), (798, 801151), (1482, 431389), (1729, 369762), (3458, 184881), (5187, 123254), (10374, 61627)]