1900159105

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 2718261504

約数和(自身を除く): 818102399

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 169, 221, 251, 289, 403, 527, 845, 1105, 1255, 1445, 2015, 2635, 2873, 3263, 3757, 4267, 5239, 6851, 7781, 8959, 14365, 16315, 18785, 21335, 26195, 34255, 38905, 42419, 44795, 48841, 55471, 72539, 89063, 101153, 116467, 132277, 212095, 244205, 277355, 362695, 445315, 505765, 582335, 661385, 721123, 943007, 1314989, 1514071, 1719601, 2248709, 3605615, 4715035, 6574945, 7570355, 8598005, 11243545, 12259091, 22354813, 29233217, 61295455, 111774065, 146166085, 380031821, 1900159105]

約数ペア:

[(1, 1900159105), (5, 380031821), (13, 146166085), (17, 111774065), (31, 61295455), (65, 29233217), (85, 22354813), (155, 12259091), (169, 11243545), (221, 8598005), (251, 7570355), (289, 6574945), (403, 4715035), (527, 3605615), (845, 2248709), (1105, 1719601), (1255, 1514071), (1445, 1314989), (2015, 943007), (2635, 721123), (2873, 661385), (3263, 582335), (3757, 505765), (4267, 445315), (5239, 362695), (6851, 277355), (7781, 244205), (8959, 212095), (14365, 132277), (16315, 116467), (18785, 101153), (21335, 89063), (26195, 72539), (34255, 55471), (38905, 48841), (42419, 44795)]