19431867

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 15404613

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 53, 79, 91, 119, 159, 221, 237, 273, 357, 371, 553, 663, 689, 901, 1027, 1113, 1343, 1547, 1659, 2067, 2703, 3081, 4029, 4187, 4641, 4823, 6307, 7189, 9401, 11713, 12561, 14469, 17459, 18921, 21567, 28203, 29309, 35139, 52377, 54431, 71179, 81991, 87927, 122213, 163293, 213537, 245973, 366639, 381017, 498253, 925327, 1143051, 1494759, 2775981, 6477289, 19431867]

約数ペア:

[(1, 19431867), (3, 6477289), (7, 2775981), (13, 1494759), (17, 1143051), (21, 925327), (39, 498253), (51, 381017), (53, 366639), (79, 245973), (91, 213537), (119, 163293), (159, 122213), (221, 87927), (237, 81991), (273, 71179), (357, 54431), (371, 52377), (553, 35139), (663, 29309), (689, 28203), (901, 21567), (1027, 18921), (1113, 17459), (1343, 14469), (1547, 12561), (1659, 11713), (2067, 9401), (2703, 7189), (3081, 6307), (4029, 4823), (4187, 4641)]