19817644

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{47}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 45384192

約数和(自身を除く): 25566548

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 47, 74, 77, 94, 148, 154, 188, 259, 308, 329, 407, 517, 518, 658, 814, 1034, 1036, 1316, 1369, 1628, 1739, 2068, 2738, 2849, 3478, 3619, 5476, 5698, 6956, 7238, 9583, 11396, 12173, 14476, 15059, 19129, 19166, 24346, 30118, 38258, 38332, 48692, 60236, 64343, 76516, 105413, 128686, 133903, 210826, 257372, 267806, 421652, 450401, 535612, 707773, 900802, 1415546, 1801604, 2831092, 4954411, 9908822, 19817644]

約数ペア:

[(1, 19817644), (2, 9908822), (4, 4954411), (7, 2831092), (11, 1801604), (14, 1415546), (22, 900802), (28, 707773), (37, 535612), (44, 450401), (47, 421652), (74, 267806), (77, 257372), (94, 210826), (148, 133903), (154, 128686), (188, 105413), (259, 76516), (308, 64343), (329, 60236), (407, 48692), (517, 38332), (518, 38258), (658, 30118), (814, 24346), (1034, 19166), (1036, 19129), (1316, 15059), (1369, 14476), (1628, 12173), (1739, 11396), (2068, 9583), (2738, 7238), (2849, 6956), (3478, 5698), (3619, 5476)]