19447868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 40064640

約数和(自身を除く): 20616772

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 541, 817, 836, 946, 1082, 1634, 1892, 2164, 3268, 5951, 8987, 10279, 11902, 17974, 20558, 23263, 23804, 35948, 41116, 46526, 93052, 113069, 226138, 255893, 441997, 452276, 511786, 883994, 1023572, 1767988, 4861967, 9723934, 19447868]

約数ペア:

[(1, 19447868), (2, 9723934), (4, 4861967), (11, 1767988), (19, 1023572), (22, 883994), (38, 511786), (43, 452276), (44, 441997), (76, 255893), (86, 226138), (172, 113069), (209, 93052), (418, 46526), (473, 41116), (541, 35948), (817, 23804), (836, 23263), (946, 20558), (1082, 17974), (1634, 11902), (1892, 10279), (2164, 8987), (3268, 5951)]