161931980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{727}}^1$

素因数の和:823

約数の個数: 96

約数和(自身を含む): 408984576

約数和(自身を除く): 247052596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 43, 70, 74, 86, 140, 148, 172, 185, 215, 259, 301, 370, 430, 518, 602, 727, 740, 860, 1036, 1204, 1295, 1454, 1505, 1591, 2590, 2908, 3010, 3182, 3635, 5089, 5180, 6020, 6364, 7270, 7955, 10178, 11137, 14540, 15910, 20356, 22274, 25445, 26899, 31261, 31820, 44548, 50890, 53798, 55685, 62522, 101780, 107596, 111370, 125044, 134495, 156305, 188293, 218827, 222740, 268990, 312610, 376586, 437654, 537980, 625220, 753172, 875308, 941465, 1094135, 1156657, 1882930, 2188270, 2313314, 3765860, 4376540, 4626628, 5783285, 8096599, 11566570, 16193198, 23133140, 32386396, 40482995, 80965990, 161931980]

約数ペア:

[(1, 161931980), (2, 80965990), (4, 40482995), (5, 32386396), (7, 23133140), (10, 16193198), (14, 11566570), (20, 8096599), (28, 5783285), (35, 4626628), (37, 4376540), (43, 3765860), (70, 2313314), (74, 2188270), (86, 1882930), (140, 1156657), (148, 1094135), (172, 941465), (185, 875308), (215, 753172), (259, 625220), (301, 537980), (370, 437654), (430, 376586), (518, 312610), (602, 268990), (727, 222740), (740, 218827), (860, 188293), (1036, 156305), (1204, 134495), (1295, 125044), (1454, 111370), (1505, 107596), (1591, 101780), (2590, 62522), (2908, 55685), (3010, 53798), (3182, 50890), (3635, 44548), (5089, 31820), (5180, 31261), (6020, 26899), (6364, 25445), (7270, 22274), (7955, 20356), (10178, 15910), (11137, 14540)]