20850410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 46068480

約数和(自身を除く): 25218070

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 61, 70, 95, 122, 133, 190, 257, 266, 305, 427, 514, 610, 665, 854, 1159, 1285, 1330, 1799, 2135, 2318, 2570, 3598, 4270, 4883, 5795, 8113, 8995, 9766, 11590, 15677, 16226, 17990, 24415, 31354, 34181, 40565, 48830, 68362, 78385, 81130, 109739, 156770, 170905, 219478, 297863, 341810, 548695, 595726, 1097390, 1489315, 2085041, 2978630, 4170082, 10425205, 20850410]

約数ペア:

[(1, 20850410), (2, 10425205), (5, 4170082), (7, 2978630), (10, 2085041), (14, 1489315), (19, 1097390), (35, 595726), (38, 548695), (61, 341810), (70, 297863), (95, 219478), (122, 170905), (133, 156770), (190, 109739), (257, 81130), (266, 78385), (305, 68362), (427, 48830), (514, 40565), (610, 34181), (665, 31354), (854, 24415), (1159, 17990), (1285, 16226), (1330, 15677), (1799, 11590), (2135, 9766), (2318, 8995), (2570, 8113), (3598, 5795), (4270, 4883)]