20792328501

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{409}}^1\times {\mathrm{1237}}^1$

素因数の和:1778

約数の個数: 64

約数和(自身を含む): 33784524800

約数和(自身を除く): 12992196299

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 409, 721, 1227, 1237, 1957, 2163, 2863, 3711, 5871, 7771, 8589, 8659, 13699, 23313, 23503, 25977, 41097, 42127, 54397, 70509, 126381, 127411, 163191, 164521, 294889, 382233, 493563, 505933, 800413, 884667, 891877, 1517799, 2401239, 2420809, 2675631, 3541531, 5602891, 7262427, 9612727, 10624593, 16808673, 16945663, 28838181, 50836989, 52111099, 67289089, 156333297, 201867267, 364777693, 990110881, 1094333079, 2970332643, 6930776167, 20792328501]

約数ペア:

[(1, 20792328501), (3, 6930776167), (7, 2970332643), (19, 1094333079), (21, 990110881), (57, 364777693), (103, 201867267), (133, 156333297), (309, 67289089), (399, 52111099), (409, 50836989), (721, 28838181), (1227, 16945663), (1237, 16808673), (1957, 10624593), (2163, 9612727), (2863, 7262427), (3711, 5602891), (5871, 3541531), (7771, 2675631), (8589, 2420809), (8659, 2401239), (13699, 1517799), (23313, 891877), (23503, 884667), (25977, 800413), (41097, 505933), (42127, 493563), (54397, 382233), (70509, 294889), (126381, 164521), (127411, 163191)]