20847780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{757}}^1$

素因数の和:795

約数の個数: 120

約数和(自身を含む): 69338808

約数和(自身を除く): 48491028

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, 757, 765, 810, 918, 1020, 1377, 1514, 1530, 1620, 1836, 2271, 2295, 2754, 3028, 3060, 3785, 4542, 4590, 5508, 6813, 6885, 7570, 9084, 9180, 11355, 12869, 13626, 13770, 15140, 20439, 22710, 25738, 27252, 27540, 34065, 38607, 40878, 45420, 51476, 61317, 64345, 68130, 77214, 81756, 102195, 115821, 122634, 128690, 136260, 154428, 193035, 204390, 231642, 245268, 257380, 306585, 347463, 386070, 408780, 463284, 579105, 613170, 694926, 772140, 1042389, 1158210, 1226340, 1389852, 1737315, 2084778, 2316420, 3474630, 4169556, 5211945, 6949260, 10423890, 20847780]

約数ペア:

[(1, 20847780), (2, 10423890), (3, 6949260), (4, 5211945), (5, 4169556), (6, 3474630), (9, 2316420), (10, 2084778), (12, 1737315), (15, 1389852), (17, 1226340), (18, 1158210), (20, 1042389), (27, 772140), (30, 694926), (34, 613170), (36, 579105), (45, 463284), (51, 408780), (54, 386070), (60, 347463), (68, 306585), (81, 257380), (85, 245268), (90, 231642), (102, 204390), (108, 193035), (135, 154428), (153, 136260), (162, 128690), (170, 122634), (180, 115821), (204, 102195), (255, 81756), (270, 77214), (306, 68130), (324, 64345), (340, 61317), (405, 51476), (459, 45420), (510, 40878), (540, 38607), (612, 34065), (757, 27540), (765, 27252), (810, 25738), (918, 22710), (1020, 20439), (1377, 15140), (1514, 13770), (1530, 13626), (1620, 12869), (1836, 11355), (2271, 9180), (2295, 9084), (2754, 7570), (3028, 6885), (3060, 6813), (3785, 5508), (4542, 4590)]