21288420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{773}}^1$

素因数の和:811

約数の個数: 120

約数和(自身を含む): 70802424

約数和(自身を除く): 49514004

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, 773, 810, 918, 1020, 1377, 1530, 1546, 1620, 1836, 2295, 2319, 2754, 3060, 3092, 3865, 4590, 4638, 5508, 6885, 6957, 7730, 9180, 9276, 11595, 13141, 13770, 13914, 15460, 20871, 23190, 26282, 27540, 27828, 34785, 39423, 41742, 46380, 52564, 62613, 65705, 69570, 78846, 83484, 104355, 118269, 125226, 131410, 139140, 157692, 197115, 208710, 236538, 250452, 262820, 313065, 354807, 394230, 417420, 473076, 591345, 626130, 709614, 788460, 1064421, 1182690, 1252260, 1419228, 1774035, 2128842, 2365380, 3548070, 4257684, 5322105, 7096140, 10644210, 21288420]

約数ペア:

[(1, 21288420), (2, 10644210), (3, 7096140), (4, 5322105), (5, 4257684), (6, 3548070), (9, 2365380), (10, 2128842), (12, 1774035), (15, 1419228), (17, 1252260), (18, 1182690), (20, 1064421), (27, 788460), (30, 709614), (34, 626130), (36, 591345), (45, 473076), (51, 417420), (54, 394230), (60, 354807), (68, 313065), (81, 262820), (85, 250452), (90, 236538), (102, 208710), (108, 197115), (135, 157692), (153, 139140), (162, 131410), (170, 125226), (180, 118269), (204, 104355), (255, 83484), (270, 78846), (306, 69570), (324, 65705), (340, 62613), (405, 52564), (459, 46380), (510, 41742), (540, 39423), (612, 34785), (765, 27828), (773, 27540), (810, 26282), (918, 23190), (1020, 20871), (1377, 15460), (1530, 13914), (1546, 13770), (1620, 13141), (1836, 11595), (2295, 9276), (2319, 9180), (2754, 7730), (3060, 6957), (3092, 6885), (3865, 5508), (4590, 4638)]