18907888

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^2$

素因数の和:146

約数の個数: 60

約数和(自身を含む): 40593880

約数和(自身を除く): 21685992

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 41, 74, 76, 82, 148, 152, 164, 296, 304, 328, 592, 656, 703, 779, 1406, 1517, 1558, 1681, 2812, 3034, 3116, 3362, 5624, 6068, 6232, 6724, 11248, 12136, 12464, 13448, 24272, 26896, 28823, 31939, 57646, 62197, 63878, 115292, 124394, 127756, 230584, 248788, 255512, 461168, 497576, 511024, 995152, 1181743, 2363486, 4726972, 9453944, 18907888]

約数ペア:

[(1, 18907888), (2, 9453944), (4, 4726972), (8, 2363486), (16, 1181743), (19, 995152), (37, 511024), (38, 497576), (41, 461168), (74, 255512), (76, 248788), (82, 230584), (148, 127756), (152, 124394), (164, 115292), (296, 63878), (304, 62197), (328, 57646), (592, 31939), (656, 28823), (703, 26896), (779, 24272), (1406, 13448), (1517, 12464), (1558, 12136), (1681, 11248), (2812, 6724), (3034, 6232), (3116, 6068), (3362, 5624)]