20739390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1619}}^1$

素因数の和:1697

約数の個数: 64

約数和(自身を含む): 57853440

約数和(自身を除く): 37114050

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 61, 70, 105, 122, 183, 210, 305, 366, 427, 610, 854, 915, 1281, 1619, 1830, 2135, 2562, 3238, 4270, 4857, 6405, 8095, 9714, 11333, 12810, 16190, 22666, 24285, 33999, 48570, 56665, 67998, 98759, 113330, 169995, 197518, 296277, 339990, 493795, 592554, 691313, 987590, 1382626, 1481385, 2073939, 2962770, 3456565, 4147878, 6913130, 10369695, 20739390]

約数ペア:

[(1, 20739390), (2, 10369695), (3, 6913130), (5, 4147878), (6, 3456565), (7, 2962770), (10, 2073939), (14, 1481385), (15, 1382626), (21, 987590), (30, 691313), (35, 592554), (42, 493795), (61, 339990), (70, 296277), (105, 197518), (122, 169995), (183, 113330), (210, 98759), (305, 67998), (366, 56665), (427, 48570), (610, 33999), (854, 24285), (915, 22666), (1281, 16190), (1619, 12810), (1830, 11333), (2135, 9714), (2562, 8095), (3238, 6405), (4270, 4857)]