81805780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:293

約数の個数: 96

約数和(自身を含む): 204374016

約数和(自身を除く): 122568236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 107, 127, 140, 172, 214, 215, 254, 301, 428, 430, 508, 535, 602, 635, 749, 860, 889, 1070, 1204, 1270, 1498, 1505, 1778, 2140, 2540, 2996, 3010, 3556, 3745, 4445, 4601, 5461, 6020, 7490, 8890, 9202, 10922, 13589, 14980, 17780, 18404, 21844, 23005, 27178, 27305, 32207, 38227, 46010, 54356, 54610, 64414, 67945, 76454, 92020, 95123, 109220, 128828, 135890, 152908, 161035, 190246, 191135, 271780, 322070, 380492, 382270, 475615, 584327, 644140, 764540, 951230, 1168654, 1902460, 2337308, 2921635, 4090289, 5843270, 8180578, 11686540, 16361156, 20451445, 40902890, 81805780]

約数ペア:

[(1, 81805780), (2, 40902890), (4, 20451445), (5, 16361156), (7, 11686540), (10, 8180578), (14, 5843270), (20, 4090289), (28, 2921635), (35, 2337308), (43, 1902460), (70, 1168654), (86, 951230), (107, 764540), (127, 644140), (140, 584327), (172, 475615), (214, 382270), (215, 380492), (254, 322070), (301, 271780), (428, 191135), (430, 190246), (508, 161035), (535, 152908), (602, 135890), (635, 128828), (749, 109220), (860, 95123), (889, 92020), (1070, 76454), (1204, 67945), (1270, 64414), (1498, 54610), (1505, 54356), (1778, 46010), (2140, 38227), (2540, 32207), (2996, 27305), (3010, 27178), (3556, 23005), (3745, 21844), (4445, 18404), (4601, 17780), (5461, 14980), (6020, 13589), (7490, 10922), (8890, 9202)]