21315360

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{367}}^1$

素因数の和:407

約数の個数: 144

約数和(自身を含む): 74003328

約数和(自身を除く): 52687968

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 121, 132, 160, 165, 176, 220, 240, 242, 264, 330, 352, 363, 367, 440, 480, 484, 528, 605, 660, 726, 734, 880, 968, 1056, 1101, 1210, 1320, 1452, 1468, 1760, 1815, 1835, 1936, 2202, 2420, 2640, 2904, 2936, 3630, 3670, 3872, 4037, 4404, 4840, 5280, 5505, 5808, 5872, 7260, 7340, 8074, 8808, 9680, 11010, 11616, 11744, 12111, 14520, 14680, 16148, 17616, 19360, 20185, 22020, 24222, 29040, 29360, 32296, 35232, 40370, 44040, 44407, 48444, 58080, 58720, 60555, 64592, 80740, 88080, 88814, 96888, 121110, 129184, 133221, 161480, 176160, 177628, 193776, 222035, 242220, 266442, 322960, 355256, 387552, 444070, 484440, 532884, 645920, 666105, 710512, 888140, 968880, 1065768, 1332210, 1421024, 1776280, 1937760, 2131536, 2664420, 3552560, 4263072, 5328840, 7105120, 10657680, 21315360]

約数ペア:

[(1, 21315360), (2, 10657680), (3, 7105120), (4, 5328840), (5, 4263072), (6, 3552560), (8, 2664420), (10, 2131536), (11, 1937760), (12, 1776280), (15, 1421024), (16, 1332210), (20, 1065768), (22, 968880), (24, 888140), (30, 710512), (32, 666105), (33, 645920), (40, 532884), (44, 484440), (48, 444070), (55, 387552), (60, 355256), (66, 322960), (80, 266442), (88, 242220), (96, 222035), (110, 193776), (120, 177628), (121, 176160), (132, 161480), (160, 133221), (165, 129184), (176, 121110), (220, 96888), (240, 88814), (242, 88080), (264, 80740), (330, 64592), (352, 60555), (363, 58720), (367, 58080), (440, 48444), (480, 44407), (484, 44040), (528, 40370), (605, 35232), (660, 32296), (726, 29360), (734, 29040), (880, 24222), (968, 22020), (1056, 20185), (1101, 19360), (1210, 17616), (1320, 16148), (1452, 14680), (1468, 14520), (1760, 12111), (1815, 11744), (1835, 11616), (1936, 11010), (2202, 9680), (2420, 8808), (2640, 8074), (2904, 7340), (2936, 7260), (3630, 5872), (3670, 5808), (3872, 5505), (4037, 5280), (4404, 4840)]