19210520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:217

約数の個数: 128

約数和(自身を含む): 54604800

約数和(自身を除く): 35394280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 23, 28, 35, 38, 40, 46, 56, 70, 76, 92, 95, 115, 133, 140, 152, 157, 161, 184, 190, 230, 266, 280, 314, 322, 380, 437, 460, 532, 628, 644, 665, 760, 785, 805, 874, 920, 1064, 1099, 1256, 1288, 1330, 1570, 1610, 1748, 2185, 2198, 2660, 2983, 3059, 3140, 3220, 3496, 3611, 4370, 4396, 5320, 5495, 5966, 6118, 6280, 6440, 7222, 8740, 8792, 10990, 11932, 12236, 14444, 14915, 15295, 17480, 18055, 20881, 21980, 23864, 24472, 25277, 28888, 29830, 30590, 36110, 41762, 43960, 50554, 59660, 61180, 68609, 72220, 83524, 101108, 104405, 119320, 122360, 126385, 137218, 144440, 167048, 202216, 208810, 252770, 274436, 343045, 417620, 480263, 505540, 548872, 686090, 835240, 960526, 1011080, 1372180, 1921052, 2401315, 2744360, 3842104, 4802630, 9605260, 19210520]

約数ペア:

[(1, 19210520), (2, 9605260), (4, 4802630), (5, 3842104), (7, 2744360), (8, 2401315), (10, 1921052), (14, 1372180), (19, 1011080), (20, 960526), (23, 835240), (28, 686090), (35, 548872), (38, 505540), (40, 480263), (46, 417620), (56, 343045), (70, 274436), (76, 252770), (92, 208810), (95, 202216), (115, 167048), (133, 144440), (140, 137218), (152, 126385), (157, 122360), (161, 119320), (184, 104405), (190, 101108), (230, 83524), (266, 72220), (280, 68609), (314, 61180), (322, 59660), (380, 50554), (437, 43960), (460, 41762), (532, 36110), (628, 30590), (644, 29830), (665, 28888), (760, 25277), (785, 24472), (805, 23864), (874, 21980), (920, 20881), (1064, 18055), (1099, 17480), (1256, 15295), (1288, 14915), (1330, 14444), (1570, 12236), (1610, 11932), (1748, 10990), (2185, 8792), (2198, 8740), (2660, 7222), (2983, 6440), (3059, 6280), (3140, 6118), (3220, 5966), (3496, 5495), (3611, 5320), (4370, 4396)]