161997220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 436512384

約数和(自身を除く): 274515164

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 73, 77, 110, 121, 131, 140, 146, 154, 220, 242, 262, 292, 308, 365, 385, 484, 511, 524, 605, 655, 730, 770, 803, 847, 917, 1022, 1210, 1310, 1441, 1460, 1540, 1606, 1694, 1834, 2044, 2420, 2555, 2620, 2882, 3212, 3388, 3668, 4015, 4235, 4585, 5110, 5621, 5764, 7205, 8030, 8470, 8833, 9170, 9563, 10087, 10220, 11242, 14410, 15851, 16060, 16940, 17666, 18340, 19126, 20174, 22484, 28105, 28820, 31702, 35332, 38252, 40348, 44165, 47815, 50435, 56210, 61831, 63404, 66941, 79255, 88330, 95630, 100870, 105193, 110957, 112420, 123662, 133882, 158510, 176660, 191260, 201740, 210386, 221914, 247324, 267764, 309155, 317020, 334705, 420772, 443828, 525965, 554785, 618310, 669410, 736351, 1051930, 1109570, 1157123, 1236620, 1338820, 1472702, 2103860, 2219140, 2314246, 2945404, 3681755, 4628492, 5785615, 7363510, 8099861, 11571230, 14727020, 16199722, 23142460, 32399444, 40499305, 80998610, 161997220]

約数ペア:

[(1, 161997220), (2, 80998610), (4, 40499305), (5, 32399444), (7, 23142460), (10, 16199722), (11, 14727020), (14, 11571230), (20, 8099861), (22, 7363510), (28, 5785615), (35, 4628492), (44, 3681755), (55, 2945404), (70, 2314246), (73, 2219140), (77, 2103860), (110, 1472702), (121, 1338820), (131, 1236620), (140, 1157123), (146, 1109570), (154, 1051930), (220, 736351), (242, 669410), (262, 618310), (292, 554785), (308, 525965), (365, 443828), (385, 420772), (484, 334705), (511, 317020), (524, 309155), (605, 267764), (655, 247324), (730, 221914), (770, 210386), (803, 201740), (847, 191260), (917, 176660), (1022, 158510), (1210, 133882), (1310, 123662), (1441, 112420), (1460, 110957), (1540, 105193), (1606, 100870), (1694, 95630), (1834, 88330), (2044, 79255), (2420, 66941), (2555, 63404), (2620, 61831), (2882, 56210), (3212, 50435), (3388, 47815), (3668, 44165), (4015, 40348), (4235, 38252), (4585, 35332), (5110, 31702), (5621, 28820), (5764, 28105), (7205, 22484), (8030, 20174), (8470, 19126), (8833, 18340), (9170, 17666), (9563, 16940), (10087, 16060), (10220, 15851), (11242, 14410)]