19819688

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25799512

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 109, 119, 136, 191, 218, 238, 382, 436, 476, 763, 764, 872, 952, 1337, 1526, 1528, 1853, 2674, 3052, 3247, 3706, 5348, 6104, 6494, 7412, 10696, 12971, 12988, 14824, 20819, 22729, 25942, 25976, 41638, 45458, 51884, 83276, 90916, 103768, 145733, 166552, 181832, 291466, 353923, 582932, 707846, 1165864, 1415692, 2477461, 2831384, 4954922, 9909844, 19819688]

約数ペア:

[(1, 19819688), (2, 9909844), (4, 4954922), (7, 2831384), (8, 2477461), (14, 1415692), (17, 1165864), (28, 707846), (34, 582932), (56, 353923), (68, 291466), (109, 181832), (119, 166552), (136, 145733), (191, 103768), (218, 90916), (238, 83276), (382, 51884), (436, 45458), (476, 41638), (763, 25976), (764, 25942), (872, 22729), (952, 20819), (1337, 14824), (1526, 12988), (1528, 12971), (1853, 10696), (2674, 7412), (3052, 6494), (3247, 6104), (3706, 5348)]