20657868

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:387

約数の個数: 96

約数和(自身を含む): 61071360

約数和(自身を除く): 40413492

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 66, 77, 79, 84, 132, 154, 158, 231, 237, 283, 308, 316, 462, 474, 553, 566, 849, 869, 924, 948, 1106, 1132, 1659, 1698, 1738, 1981, 2212, 2607, 3113, 3318, 3396, 3476, 3962, 5214, 5943, 6083, 6226, 6636, 7924, 9339, 10428, 11886, 12166, 12452, 18249, 18678, 21791, 22357, 23772, 24332, 36498, 37356, 43582, 44714, 65373, 67071, 72996, 87164, 89428, 130746, 134142, 156499, 245927, 261492, 268284, 312998, 469497, 491854, 625996, 737781, 938994, 983708, 1475562, 1721489, 1877988, 2951124, 3442978, 5164467, 6885956, 10328934, 20657868]

約数ペア:

[(1, 20657868), (2, 10328934), (3, 6885956), (4, 5164467), (6, 3442978), (7, 2951124), (11, 1877988), (12, 1721489), (14, 1475562), (21, 983708), (22, 938994), (28, 737781), (33, 625996), (42, 491854), (44, 469497), (66, 312998), (77, 268284), (79, 261492), (84, 245927), (132, 156499), (154, 134142), (158, 130746), (231, 89428), (237, 87164), (283, 72996), (308, 67071), (316, 65373), (462, 44714), (474, 43582), (553, 37356), (566, 36498), (849, 24332), (869, 23772), (924, 22357), (948, 21791), (1106, 18678), (1132, 18249), (1659, 12452), (1698, 12166), (1738, 11886), (1981, 10428), (2212, 9339), (2607, 7924), (3113, 6636), (3318, 6226), (3396, 6083), (3476, 5943), (3962, 5214)]