21037758

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{439}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 49357440

約数和(自身を除く): 28319682

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 163, 294, 326, 439, 489, 878, 978, 1141, 1317, 2282, 2634, 3073, 3423, 6146, 6846, 7987, 9219, 15974, 18438, 21511, 23961, 43022, 47922, 64533, 71557, 129066, 143114, 214671, 429342, 500899, 1001798, 1502697, 3005394, 3506293, 7012586, 10518879, 21037758]

約数ペア:

[(1, 21037758), (2, 10518879), (3, 7012586), (6, 3506293), (7, 3005394), (14, 1502697), (21, 1001798), (42, 500899), (49, 429342), (98, 214671), (147, 143114), (163, 129066), (294, 71557), (326, 64533), (439, 47922), (489, 43022), (878, 23961), (978, 21511), (1141, 18438), (1317, 15974), (2282, 9219), (2634, 7987), (3073, 6846), (3423, 6146)]