20261780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 33928300

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 59, 70, 77, 110, 118, 140, 154, 220, 223, 236, 295, 308, 385, 413, 446, 590, 649, 770, 826, 892, 1115, 1180, 1298, 1540, 1561, 1652, 2065, 2230, 2453, 2596, 3122, 3245, 4130, 4460, 4543, 4906, 6244, 6490, 7805, 8260, 9086, 9812, 12265, 12980, 13157, 15610, 17171, 18172, 22715, 24530, 26314, 31220, 34342, 45430, 49060, 52628, 65785, 68684, 85855, 90860, 92099, 131570, 144727, 171710, 184198, 263140, 289454, 343420, 368396, 460495, 578908, 723635, 920990, 1013089, 1447270, 1841980, 2026178, 2894540, 4052356, 5065445, 10130890, 20261780]

約数ペア:

[(1, 20261780), (2, 10130890), (4, 5065445), (5, 4052356), (7, 2894540), (10, 2026178), (11, 1841980), (14, 1447270), (20, 1013089), (22, 920990), (28, 723635), (35, 578908), (44, 460495), (55, 368396), (59, 343420), (70, 289454), (77, 263140), (110, 184198), (118, 171710), (140, 144727), (154, 131570), (220, 92099), (223, 90860), (236, 85855), (295, 68684), (308, 65785), (385, 52628), (413, 49060), (446, 45430), (590, 34342), (649, 31220), (770, 26314), (826, 24530), (892, 22715), (1115, 18172), (1180, 17171), (1298, 15610), (1540, 13157), (1561, 12980), (1652, 12265), (2065, 9812), (2230, 9086), (2453, 8260), (2596, 7805), (3122, 6490), (3245, 6244), (4130, 4906), (4460, 4543)]