21499894

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 36630720

約数和(自身を除く): 15130826

約数列:

[1, 2, 13, 23, 26, 46, 157, 229, 299, 314, 458, 598, 2041, 2977, 3611, 4082, 5267, 5954, 7222, 10534, 35953, 46943, 68471, 71906, 93886, 136942, 467389, 826919, 934778, 1653838, 10749947, 21499894]

約数ペア:

[(1, 21499894), (2, 10749947), (13, 1653838), (23, 934778), (26, 826919), (46, 467389), (157, 136942), (229, 93886), (299, 71906), (314, 68471), (458, 46943), (598, 35953), (2041, 10534), (2977, 7222), (3611, 5954), (4082, 5267)]