21325892

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 44728320

約数和(自身を除く): 23402428

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 79, 124, 158, 217, 311, 316, 434, 553, 622, 868, 1106, 1244, 2177, 2212, 2449, 4354, 4898, 8708, 9641, 9796, 17143, 19282, 24569, 34286, 38564, 49138, 67487, 68572, 98276, 134974, 171983, 269948, 343966, 687932, 761639, 1523278, 3046556, 5331473, 10662946, 21325892]

約数ペア:

[(1, 21325892), (2, 10662946), (4, 5331473), (7, 3046556), (14, 1523278), (28, 761639), (31, 687932), (62, 343966), (79, 269948), (124, 171983), (158, 134974), (217, 98276), (311, 68572), (316, 67487), (434, 49138), (553, 38564), (622, 34286), (868, 24569), (1106, 19282), (1244, 17143), (2177, 9796), (2212, 9641), (2449, 8708), (4354, 4898)]