21961280

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{367}}^1$

素因数の和:412

約数の個数: 112

約数和(自身を含む): 60569856

約数和(自身を除く): 38608576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 320, 340, 352, 367, 374, 440, 544, 680, 704, 734, 748, 880, 935, 1088, 1360, 1468, 1496, 1760, 1835, 1870, 2720, 2936, 2992, 3520, 3670, 3740, 4037, 5440, 5872, 5984, 6239, 7340, 7480, 8074, 11744, 11968, 12478, 14680, 14960, 16148, 20185, 23488, 24956, 29360, 29920, 31195, 32296, 40370, 49912, 58720, 59840, 62390, 64592, 68629, 80740, 99824, 117440, 124780, 129184, 137258, 161480, 199648, 249560, 258368, 274516, 322960, 343145, 399296, 499120, 549032, 645920, 686290, 998240, 1098064, 1291840, 1372580, 1996480, 2196128, 2745160, 4392256, 5490320, 10980640, 21961280]

約数ペア:

[(1, 21961280), (2, 10980640), (4, 5490320), (5, 4392256), (8, 2745160), (10, 2196128), (11, 1996480), (16, 1372580), (17, 1291840), (20, 1098064), (22, 998240), (32, 686290), (34, 645920), (40, 549032), (44, 499120), (55, 399296), (64, 343145), (68, 322960), (80, 274516), (85, 258368), (88, 249560), (110, 199648), (136, 161480), (160, 137258), (170, 129184), (176, 124780), (187, 117440), (220, 99824), (272, 80740), (320, 68629), (340, 64592), (352, 62390), (367, 59840), (374, 58720), (440, 49912), (544, 40370), (680, 32296), (704, 31195), (734, 29920), (748, 29360), (880, 24956), (935, 23488), (1088, 20185), (1360, 16148), (1468, 14960), (1496, 14680), (1760, 12478), (1835, 11968), (1870, 11744), (2720, 8074), (2936, 7480), (2992, 7340), (3520, 6239), (3670, 5984), (3740, 5872), (4037, 5440)]