20895184

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:419

約数の個数: 40

約数和(自身を含む): 41822720

約数和(自身を除く): 20927536

約数列:

[1, 2, 4, 8, 16, 61, 79, 122, 158, 244, 271, 316, 488, 542, 632, 976, 1084, 1264, 2168, 4336, 4819, 9638, 16531, 19276, 21409, 33062, 38552, 42818, 66124, 77104, 85636, 132248, 171272, 264496, 342544, 1305949, 2611898, 5223796, 10447592, 20895184]

約数ペア:

[(1, 20895184), (2, 10447592), (4, 5223796), (8, 2611898), (16, 1305949), (61, 342544), (79, 264496), (122, 171272), (158, 132248), (244, 85636), (271, 77104), (316, 66124), (488, 42818), (542, 38552), (632, 33062), (976, 21409), (1084, 19276), (1264, 16531), (2168, 9638), (4336, 4819)]