20614905

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 72

約数和(自身を含む): 39940992

約数和(自身を除く): 19326087

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 47, 57, 81, 95, 135, 141, 171, 235, 243, 285, 361, 405, 423, 513, 705, 855, 893, 1083, 1215, 1269, 1539, 1805, 2115, 2565, 2679, 3249, 3807, 4465, 4617, 5415, 6345, 7695, 8037, 9747, 11421, 13395, 16245, 16967, 19035, 23085, 24111, 29241, 40185, 48735, 50901, 57105, 72333, 84835, 87723, 120555, 146205, 152703, 216999, 254505, 361665, 438615, 458109, 763515, 1084995, 1374327, 2290545, 4122981, 6871635, 20614905]

約数ペア:

[(1, 20614905), (3, 6871635), (5, 4122981), (9, 2290545), (15, 1374327), (19, 1084995), (27, 763515), (45, 458109), (47, 438615), (57, 361665), (81, 254505), (95, 216999), (135, 152703), (141, 146205), (171, 120555), (235, 87723), (243, 84835), (285, 72333), (361, 57105), (405, 50901), (423, 48735), (513, 40185), (705, 29241), (855, 24111), (893, 23085), (1083, 19035), (1215, 16967), (1269, 16245), (1539, 13395), (1805, 11421), (2115, 9747), (2565, 8037), (2679, 7695), (3249, 6345), (3807, 5415), (4465, 4617)]