19890530

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:375

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 22687390

約数列:

[1, 2, 5, 10, 11, 19, 22, 31, 38, 55, 62, 95, 110, 155, 190, 209, 307, 310, 341, 418, 589, 614, 682, 1045, 1178, 1535, 1705, 2090, 2945, 3070, 3377, 3410, 5833, 5890, 6479, 6754, 9517, 11666, 12958, 16885, 19034, 29165, 32395, 33770, 47585, 58330, 64163, 64790, 95170, 104687, 128326, 180823, 209374, 320815, 361646, 523435, 641630, 904115, 1046870, 1808230, 1989053, 3978106, 9945265, 19890530]

約数ペア:

[(1, 19890530), (2, 9945265), (5, 3978106), (10, 1989053), (11, 1808230), (19, 1046870), (22, 904115), (31, 641630), (38, 523435), (55, 361646), (62, 320815), (95, 209374), (110, 180823), (155, 128326), (190, 104687), (209, 95170), (307, 64790), (310, 64163), (341, 58330), (418, 47585), (589, 33770), (614, 32395), (682, 29165), (1045, 19034), (1178, 16885), (1535, 12958), (1705, 11666), (2090, 9517), (2945, 6754), (3070, 6479), (3377, 5890), (3410, 5833)]