19974812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{743}}^1$

素因数の和:818

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 22022500

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 47, 52, 94, 143, 188, 286, 517, 572, 611, 743, 1034, 1222, 1486, 2068, 2444, 2972, 6721, 8173, 9659, 13442, 16346, 19318, 26884, 32692, 34921, 38636, 69842, 106249, 139684, 212498, 384131, 424996, 453973, 768262, 907946, 1536524, 1815892, 4993703, 9987406, 19974812]

約数ペア:

[(1, 19974812), (2, 9987406), (4, 4993703), (11, 1815892), (13, 1536524), (22, 907946), (26, 768262), (44, 453973), (47, 424996), (52, 384131), (94, 212498), (143, 139684), (188, 106249), (286, 69842), (517, 38636), (572, 34921), (611, 32692), (743, 26884), (1034, 19318), (1222, 16346), (1486, 13442), (2068, 9659), (2444, 8173), (2972, 6721)]