21027318

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 46247760

約数和(自身を除く): 25220442

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 89, 169, 178, 233, 267, 338, 466, 507, 534, 699, 1014, 1157, 1398, 2314, 3029, 3471, 6058, 6942, 9087, 15041, 18174, 20737, 30082, 39377, 41474, 45123, 62211, 78754, 90246, 118131, 124422, 236262, 269581, 539162, 808743, 1617486, 3504553, 7009106, 10513659, 21027318]

約数ペア:

[(1, 21027318), (2, 10513659), (3, 7009106), (6, 3504553), (13, 1617486), (26, 808743), (39, 539162), (78, 269581), (89, 236262), (169, 124422), (178, 118131), (233, 90246), (267, 78754), (338, 62211), (466, 45123), (507, 41474), (534, 39377), (699, 30082), (1014, 20737), (1157, 18174), (1398, 15041), (2314, 9087), (3029, 6942), (3471, 6058)]