21178260

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{769}}^1$

素因数の和:807

約数の個数: 120

約数和(自身を含む): 70436520

約数和(自身を除く): 49258260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 255, 270, 306, 324, 340, 405, 459, 510, 540, 612, 765, 769, 810, 918, 1020, 1377, 1530, 1538, 1620, 1836, 2295, 2307, 2754, 3060, 3076, 3845, 4590, 4614, 5508, 6885, 6921, 7690, 9180, 9228, 11535, 13073, 13770, 13842, 15380, 20763, 23070, 26146, 27540, 27684, 34605, 39219, 41526, 46140, 52292, 62289, 65365, 69210, 78438, 83052, 103815, 117657, 124578, 130730, 138420, 156876, 196095, 207630, 235314, 249156, 261460, 311445, 352971, 392190, 415260, 470628, 588285, 622890, 705942, 784380, 1058913, 1176570, 1245780, 1411884, 1764855, 2117826, 2353140, 3529710, 4235652, 5294565, 7059420, 10589130, 21178260]

約数ペア:

[(1, 21178260), (2, 10589130), (3, 7059420), (4, 5294565), (5, 4235652), (6, 3529710), (9, 2353140), (10, 2117826), (12, 1764855), (15, 1411884), (17, 1245780), (18, 1176570), (20, 1058913), (27, 784380), (30, 705942), (34, 622890), (36, 588285), (45, 470628), (51, 415260), (54, 392190), (60, 352971), (68, 311445), (81, 261460), (85, 249156), (90, 235314), (102, 207630), (108, 196095), (135, 156876), (153, 138420), (162, 130730), (170, 124578), (180, 117657), (204, 103815), (255, 83052), (270, 78438), (306, 69210), (324, 65365), (340, 62289), (405, 52292), (459, 46140), (510, 41526), (540, 39219), (612, 34605), (765, 27684), (769, 27540), (810, 26146), (918, 23070), (1020, 20763), (1377, 15380), (1530, 13842), (1538, 13770), (1620, 13073), (1836, 11535), (2295, 9228), (2307, 9180), (2754, 7690), (3060, 6921), (3076, 6885), (3845, 5508), (4590, 4614)]