21729060

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 72648576

約数和(自身を除く): 50919516

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, 243, 255, 263, 270, 306, 324, 340, 405, 459, 486, 510, 526, 540, 612, 765, 789, 810, 918, 972, 1020, 1052, 1215, 1315, 1377, 1530, 1578, 1620, 1836, 2295, 2367, 2430, 2630, 2754, 3060, 3156, 3945, 4131, 4471, 4590, 4734, 4860, 5260, 5508, 6885, 7101, 7890, 8262, 8942, 9180, 9468, 11835, 13413, 13770, 14202, 15780, 16524, 17884, 20655, 21303, 22355, 23670, 26826, 27540, 28404, 35505, 40239, 41310, 42606, 44710, 47340, 53652, 63909, 67065, 71010, 80478, 82620, 85212, 89420, 106515, 120717, 127818, 134130, 142020, 160956, 201195, 213030, 241434, 255636, 268260, 319545, 362151, 402390, 426060, 482868, 603585, 639090, 724302, 804780, 1086453, 1207170, 1278180, 1448604, 1810755, 2172906, 2414340, 3621510, 4345812, 5432265, 7243020, 10864530, 21729060]

約数ペア:

[(1, 21729060), (2, 10864530), (3, 7243020), (4, 5432265), (5, 4345812), (6, 3621510), (9, 2414340), (10, 2172906), (12, 1810755), (15, 1448604), (17, 1278180), (18, 1207170), (20, 1086453), (27, 804780), (30, 724302), (34, 639090), (36, 603585), (45, 482868), (51, 426060), (54, 402390), (60, 362151), (68, 319545), (81, 268260), (85, 255636), (90, 241434), (102, 213030), (108, 201195), (135, 160956), (153, 142020), (162, 134130), (170, 127818), (180, 120717), (204, 106515), (243, 89420), (255, 85212), (263, 82620), (270, 80478), (306, 71010), (324, 67065), (340, 63909), (405, 53652), (459, 47340), (486, 44710), (510, 42606), (526, 41310), (540, 40239), (612, 35505), (765, 28404), (789, 27540), (810, 26826), (918, 23670), (972, 22355), (1020, 21303), (1052, 20655), (1215, 17884), (1315, 16524), (1377, 15780), (1530, 14202), (1578, 13770), (1620, 13413), (1836, 11835), (2295, 9468), (2367, 9180), (2430, 8942), (2630, 8262), (2754, 7890), (3060, 7101), (3156, 6885), (3945, 5508), (4131, 5260), (4471, 4860), (4590, 4734)]