18385840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1229}}^1$

素因数の和:1270

約数の個数: 80

約数和(自身を含む): 49416480

約数和(自身を除く): 31030640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1229, 1360, 1496, 1870, 2458, 2992, 3740, 4916, 6145, 7480, 9832, 12290, 13519, 14960, 19664, 20893, 24580, 27038, 41786, 49160, 54076, 67595, 83572, 98320, 104465, 108152, 135190, 167144, 208930, 216304, 229823, 270380, 334288, 417860, 459646, 540760, 835720, 919292, 1081520, 1149115, 1671440, 1838584, 2298230, 3677168, 4596460, 9192920, 18385840]

約数ペア:

[(1, 18385840), (2, 9192920), (4, 4596460), (5, 3677168), (8, 2298230), (10, 1838584), (11, 1671440), (16, 1149115), (17, 1081520), (20, 919292), (22, 835720), (34, 540760), (40, 459646), (44, 417860), (55, 334288), (68, 270380), (80, 229823), (85, 216304), (88, 208930), (110, 167144), (136, 135190), (170, 108152), (176, 104465), (187, 98320), (220, 83572), (272, 67595), (340, 54076), (374, 49160), (440, 41786), (680, 27038), (748, 24580), (880, 20893), (935, 19664), (1229, 14960), (1360, 13519), (1496, 12290), (1870, 9832), (2458, 7480), (2992, 6145), (3740, 4916)]