42678020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:178

約数の個数: 144

約数和(自身を含む): 117899712

約数和(自身を除く): 75221692

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 37, 44, 49, 55, 70, 74, 77, 98, 107, 110, 140, 148, 154, 185, 196, 214, 220, 245, 259, 308, 370, 385, 407, 428, 490, 518, 535, 539, 740, 749, 770, 814, 980, 1036, 1070, 1078, 1177, 1295, 1498, 1540, 1628, 1813, 2035, 2140, 2156, 2354, 2590, 2695, 2849, 2996, 3626, 3745, 3959, 4070, 4708, 5180, 5243, 5390, 5698, 5885, 7252, 7490, 7918, 8140, 8239, 9065, 10486, 10780, 11396, 11770, 14245, 14980, 15836, 16478, 18130, 19795, 19943, 20972, 23540, 26215, 27713, 28490, 32956, 36260, 39590, 39886, 41195, 43549, 52430, 55426, 56980, 57673, 79180, 79772, 82390, 87098, 99715, 104860, 110852, 115346, 138565, 164780, 174196, 193991, 199430, 217745, 230692, 277130, 288365, 304843, 387982, 398860, 435490, 554260, 576730, 609686, 775964, 870980, 969955, 1153460, 1219372, 1524215, 1939910, 2133901, 3048430, 3879820, 4267802, 6096860, 8535604, 10669505, 21339010, 42678020]

約数ペア:

[(1, 42678020), (2, 21339010), (4, 10669505), (5, 8535604), (7, 6096860), (10, 4267802), (11, 3879820), (14, 3048430), (20, 2133901), (22, 1939910), (28, 1524215), (35, 1219372), (37, 1153460), (44, 969955), (49, 870980), (55, 775964), (70, 609686), (74, 576730), (77, 554260), (98, 435490), (107, 398860), (110, 387982), (140, 304843), (148, 288365), (154, 277130), (185, 230692), (196, 217745), (214, 199430), (220, 193991), (245, 174196), (259, 164780), (308, 138565), (370, 115346), (385, 110852), (407, 104860), (428, 99715), (490, 87098), (518, 82390), (535, 79772), (539, 79180), (740, 57673), (749, 56980), (770, 55426), (814, 52430), (980, 43549), (1036, 41195), (1070, 39886), (1078, 39590), (1177, 36260), (1295, 32956), (1498, 28490), (1540, 27713), (1628, 26215), (1813, 23540), (2035, 20972), (2140, 19943), (2156, 19795), (2354, 18130), (2590, 16478), (2695, 15836), (2849, 14980), (2996, 14245), (3626, 11770), (3745, 11396), (3959, 10780), (4070, 10486), (4708, 9065), (5180, 8239), (5243, 8140), (5390, 7918), (5698, 7490), (5885, 7252)]