20328945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{281}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 40932864

約数和(自身を除く): 20603919

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 53, 65, 91, 105, 159, 195, 265, 273, 281, 371, 455, 689, 795, 843, 1113, 1365, 1405, 1855, 1967, 2067, 3445, 3653, 4215, 4823, 5565, 5901, 9835, 10335, 10959, 14469, 14893, 18265, 24115, 25571, 29505, 44679, 54795, 72345, 74465, 76713, 104251, 127855, 193609, 223395, 312753, 383565, 521255, 580827, 968045, 1355263, 1563765, 2904135, 4065789, 6776315, 20328945]

約数ペア:

[(1, 20328945), (3, 6776315), (5, 4065789), (7, 2904135), (13, 1563765), (15, 1355263), (21, 968045), (35, 580827), (39, 521255), (53, 383565), (65, 312753), (91, 223395), (105, 193609), (159, 127855), (195, 104251), (265, 76713), (273, 74465), (281, 72345), (371, 54795), (455, 44679), (689, 29505), (795, 25571), (843, 24115), (1113, 18265), (1365, 14893), (1405, 14469), (1855, 10959), (1967, 10335), (2067, 9835), (3445, 5901), (3653, 5565), (4215, 4823)]