21403440

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{367}}^1$

素因数の和:398

約数の個数: 140

約数和(自身を含む): 74813664

約数和(自身を除く): 53410224

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 367, 405, 432, 486, 540, 648, 720, 729, 734, 810, 972, 1080, 1101, 1215, 1296, 1458, 1468, 1620, 1835, 1944, 2160, 2202, 2430, 2916, 2936, 3240, 3303, 3645, 3670, 3888, 4404, 4860, 5505, 5832, 5872, 6480, 6606, 7290, 7340, 8808, 9720, 9909, 11010, 11664, 13212, 14580, 14680, 16515, 17616, 19440, 19818, 22020, 26424, 29160, 29360, 29727, 33030, 39636, 44040, 49545, 52848, 58320, 59454, 66060, 79272, 88080, 89181, 99090, 118908, 132120, 148635, 158544, 178362, 198180, 237816, 264240, 267543, 297270, 356724, 396360, 445905, 475632, 535086, 594540, 713448, 792720, 891810, 1070172, 1189080, 1337715, 1426896, 1783620, 2140344, 2378160, 2675430, 3567240, 4280688, 5350860, 7134480, 10701720, 21403440]

約数ペア:

[(1, 21403440), (2, 10701720), (3, 7134480), (4, 5350860), (5, 4280688), (6, 3567240), (8, 2675430), (9, 2378160), (10, 2140344), (12, 1783620), (15, 1426896), (16, 1337715), (18, 1189080), (20, 1070172), (24, 891810), (27, 792720), (30, 713448), (36, 594540), (40, 535086), (45, 475632), (48, 445905), (54, 396360), (60, 356724), (72, 297270), (80, 267543), (81, 264240), (90, 237816), (108, 198180), (120, 178362), (135, 158544), (144, 148635), (162, 132120), (180, 118908), (216, 99090), (240, 89181), (243, 88080), (270, 79272), (324, 66060), (360, 59454), (367, 58320), (405, 52848), (432, 49545), (486, 44040), (540, 39636), (648, 33030), (720, 29727), (729, 29360), (734, 29160), (810, 26424), (972, 22020), (1080, 19818), (1101, 19440), (1215, 17616), (1296, 16515), (1458, 14680), (1468, 14580), (1620, 13212), (1835, 11664), (1944, 11010), (2160, 9909), (2202, 9720), (2430, 8808), (2916, 7340), (2936, 7290), (3240, 6606), (3303, 6480), (3645, 5872), (3670, 5832), (3888, 5505), (4404, 4860)]