81487980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{9239}}^1$

素因数の和:9268

約数の個数: 108

約数和(自身を含む): 287567280

約数和(自身を除く): 206079300

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820, 9239, 18478, 27717, 36956, 46195, 55434, 64673, 83151, 92390, 110868, 129346, 138585, 166302, 184780, 194019, 258692, 277170, 323365, 332604, 388038, 415755, 452711, 554340, 582057, 646730, 776076, 831510, 905422, 970095, 1164114, 1293460, 1358133, 1663020, 1810844, 1940190, 2263555, 2328228, 2716266, 2910285, 3880380, 4074399, 4527110, 5432532, 5820570, 6790665, 8148798, 9054220, 11641140, 13581330, 16297596, 20371995, 27162660, 40743990, 81487980]

約数ペア:

[(1, 81487980), (2, 40743990), (3, 27162660), (4, 20371995), (5, 16297596), (6, 13581330), (7, 11641140), (9, 9054220), (10, 8148798), (12, 6790665), (14, 5820570), (15, 5432532), (18, 4527110), (20, 4074399), (21, 3880380), (28, 2910285), (30, 2716266), (35, 2328228), (36, 2263555), (42, 1940190), (45, 1810844), (49, 1663020), (60, 1358133), (63, 1293460), (70, 1164114), (84, 970095), (90, 905422), (98, 831510), (105, 776076), (126, 646730), (140, 582057), (147, 554340), (180, 452711), (196, 415755), (210, 388038), (245, 332604), (252, 323365), (294, 277170), (315, 258692), (420, 194019), (441, 184780), (490, 166302), (588, 138585), (630, 129346), (735, 110868), (882, 92390), (980, 83151), (1260, 64673), (1470, 55434), (1764, 46195), (2205, 36956), (2940, 27717), (4410, 18478), (8820, 9239)]