18920330

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 40715136

約数和(自身を除く): 21794806

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 101, 110, 130, 131, 143, 202, 262, 286, 505, 655, 715, 1010, 1111, 1310, 1313, 1430, 1441, 1703, 2222, 2626, 2882, 3406, 5555, 6565, 7205, 8515, 11110, 13130, 13231, 14410, 14443, 17030, 18733, 26462, 28886, 37466, 66155, 72215, 93665, 132310, 144430, 145541, 172003, 187330, 291082, 344006, 727705, 860015, 1455410, 1720030, 1892033, 3784066, 9460165, 18920330]

約数ペア:

[(1, 18920330), (2, 9460165), (5, 3784066), (10, 1892033), (11, 1720030), (13, 1455410), (22, 860015), (26, 727705), (55, 344006), (65, 291082), (101, 187330), (110, 172003), (130, 145541), (131, 144430), (143, 132310), (202, 93665), (262, 72215), (286, 66155), (505, 37466), (655, 28886), (715, 26462), (1010, 18733), (1111, 17030), (1310, 14443), (1313, 14410), (1430, 13231), (1441, 13130), (1703, 11110), (2222, 8515), (2626, 7205), (2882, 6565), (3406, 5555)]