21503286

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{349}}^1$

素因数の和:530

約数の個数: 64

約数和(自身を含む): 55104000

約数和(自身を除く): 33600714

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 163, 189, 326, 349, 378, 489, 698, 978, 1047, 1141, 1467, 2094, 2282, 2443, 2934, 3141, 3423, 4401, 4886, 6282, 6846, 7329, 8802, 9423, 10269, 14658, 18846, 20538, 21987, 30807, 43974, 56887, 61614, 65961, 113774, 131922, 170661, 341322, 398209, 511983, 796418, 1023966, 1194627, 1535949, 2389254, 3071898, 3583881, 7167762, 10751643, 21503286]

約数ペア:

[(1, 21503286), (2, 10751643), (3, 7167762), (6, 3583881), (7, 3071898), (9, 2389254), (14, 1535949), (18, 1194627), (21, 1023966), (27, 796418), (42, 511983), (54, 398209), (63, 341322), (126, 170661), (163, 131922), (189, 113774), (326, 65961), (349, 61614), (378, 56887), (489, 43974), (698, 30807), (978, 21987), (1047, 20538), (1141, 18846), (1467, 14658), (2094, 10269), (2282, 9423), (2443, 8802), (2934, 7329), (3141, 6846), (3423, 6282), (4401, 4886)]