28479815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1181}}^1$

素因数の和:1259

約数の個数: 32

約数和(自身を含む): 42892416

約数和(自身を除く): 14412601

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 1181, 1855, 3445, 4823, 5905, 8267, 15353, 24115, 41335, 62593, 76765, 107471, 312965, 438151, 537355, 813709, 2190755, 4068545, 5695963, 28479815]

約数ペア:

[(1, 28479815), (5, 5695963), (7, 4068545), (13, 2190755), (35, 813709), (53, 537355), (65, 438151), (91, 312965), (265, 107471), (371, 76765), (455, 62593), (689, 41335), (1181, 24115), (1855, 15353), (3445, 8267), (4823, 5905)]