81961740

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21683}}^1$

素因数の和:21708

約数の個数: 96

約数和(自身を含む): 291432960

約数和(自身を除く): 209471220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21683, 43366, 65049, 86732, 108415, 130098, 151781, 195147, 216830, 260196, 303562, 325245, 390294, 433660, 455343, 585441, 607124, 650490, 758905, 780588, 910686, 975735, 1170882, 1300980, 1366029, 1517810, 1821372, 1951470, 2276715, 2341764, 2732058, 2927205, 3035620, 3902940, 4098087, 4553430, 5464116, 5854410, 6830145, 8196174, 9106860, 11708820, 13660290, 16392348, 20490435, 27320580, 40980870, 81961740]

約数ペア:

[(1, 81961740), (2, 40980870), (3, 27320580), (4, 20490435), (5, 16392348), (6, 13660290), (7, 11708820), (9, 9106860), (10, 8196174), (12, 6830145), (14, 5854410), (15, 5464116), (18, 4553430), (20, 4098087), (21, 3902940), (27, 3035620), (28, 2927205), (30, 2732058), (35, 2341764), (36, 2276715), (42, 1951470), (45, 1821372), (54, 1517810), (60, 1366029), (63, 1300980), (70, 1170882), (84, 975735), (90, 910686), (105, 780588), (108, 758905), (126, 650490), (135, 607124), (140, 585441), (180, 455343), (189, 433660), (210, 390294), (252, 325245), (270, 303562), (315, 260196), (378, 216830), (420, 195147), (540, 151781), (630, 130098), (756, 108415), (945, 86732), (1260, 65049), (1890, 43366), (3780, 21683)]