206849825

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:487

約数の個数: 72

約数和(自身を含む): 332478720

約数和(自身を除く): 125628895

約数列:

[1, 5, 7, 13, 25, 31, 35, 49, 65, 91, 155, 175, 217, 245, 325, 403, 419, 455, 637, 775, 1085, 1225, 1519, 2015, 2095, 2275, 2821, 2933, 3185, 5425, 5447, 7595, 10075, 10475, 12989, 14105, 14665, 15925, 19747, 20531, 27235, 37975, 38129, 64945, 70525, 73325, 90923, 98735, 102655, 136175, 168857, 190645, 266903, 324725, 454615, 493675, 513275, 636461, 844285, 953225, 1181999, 1334515, 2273075, 3182305, 4221425, 5909995, 6672575, 8273993, 15911525, 29549975, 41369965, 206849825]

約数ペア:

[(1, 206849825), (5, 41369965), (7, 29549975), (13, 15911525), (25, 8273993), (31, 6672575), (35, 5909995), (49, 4221425), (65, 3182305), (91, 2273075), (155, 1334515), (175, 1181999), (217, 953225), (245, 844285), (325, 636461), (403, 513275), (419, 493675), (455, 454615), (637, 324725), (775, 266903), (1085, 190645), (1225, 168857), (1519, 136175), (2015, 102655), (2095, 98735), (2275, 90923), (2821, 73325), (2933, 70525), (3185, 64945), (5425, 38129), (5447, 37975), (7595, 27235), (10075, 20531), (10475, 19747), (12989, 15925), (14105, 14665)]