19801432

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 44712000

約数和(自身を除く): 24910568

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 89, 116, 137, 178, 203, 232, 274, 356, 406, 548, 623, 712, 812, 959, 1096, 1246, 1624, 1918, 2492, 2581, 3836, 3973, 4984, 5162, 7672, 7946, 10324, 12193, 15892, 18067, 20648, 24386, 27811, 31784, 36134, 48772, 55622, 72268, 85351, 97544, 111244, 144536, 170702, 222488, 341404, 353597, 682808, 707194, 1414388, 2475179, 2828776, 4950358, 9900716, 19801432]

約数ペア:

[(1, 19801432), (2, 9900716), (4, 4950358), (7, 2828776), (8, 2475179), (14, 1414388), (28, 707194), (29, 682808), (56, 353597), (58, 341404), (89, 222488), (116, 170702), (137, 144536), (178, 111244), (203, 97544), (232, 85351), (274, 72268), (356, 55622), (406, 48772), (548, 36134), (623, 31784), (712, 27811), (812, 24386), (959, 20648), (1096, 18067), (1246, 15892), (1624, 12193), (1918, 10324), (2492, 7946), (2581, 7672), (3836, 5162), (3973, 4984)]