20911616

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26228224

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 64, 79, 88, 94, 128, 158, 176, 188, 256, 316, 352, 376, 512, 517, 632, 704, 752, 869, 1034, 1264, 1408, 1504, 1738, 2068, 2528, 2816, 3008, 3476, 3713, 4136, 5056, 5632, 6016, 6952, 7426, 8272, 10112, 12032, 13904, 14852, 16544, 20224, 24064, 27808, 29704, 33088, 40448, 40843, 55616, 59408, 66176, 81686, 111232, 118816, 132352, 163372, 222464, 237632, 264704, 326744, 444928, 475264, 653488, 950528, 1306976, 1901056, 2613952, 5227904, 10455808, 20911616]

約数ペア:

[(1, 20911616), (2, 10455808), (4, 5227904), (8, 2613952), (11, 1901056), (16, 1306976), (22, 950528), (32, 653488), (44, 475264), (47, 444928), (64, 326744), (79, 264704), (88, 237632), (94, 222464), (128, 163372), (158, 132352), (176, 118816), (188, 111232), (256, 81686), (316, 66176), (352, 59408), (376, 55616), (512, 40843), (517, 40448), (632, 33088), (704, 29704), (752, 27808), (869, 24064), (1034, 20224), (1264, 16544), (1408, 14852), (1504, 13904), (1738, 12032), (2068, 10112), (2528, 8272), (2816, 7426), (3008, 6952), (3476, 6016), (3713, 5632), (4136, 5056)]