285445420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{3907}}^1$

素因数の和:4210

約数の個数: 48

約数和(自身を含む): 648008928

約数和(自身を除く): 362563508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 281, 562, 1124, 1405, 2810, 3653, 3907, 5620, 7306, 7814, 14612, 15628, 18265, 19535, 36530, 39070, 50791, 73060, 78140, 101582, 203164, 253955, 507910, 1015820, 1097867, 2195734, 4391468, 5489335, 10978670, 14272271, 21957340, 28544542, 57089084, 71361355, 142722710, 285445420]

約数ペア:

[(1, 285445420), (2, 142722710), (4, 71361355), (5, 57089084), (10, 28544542), (13, 21957340), (20, 14272271), (26, 10978670), (52, 5489335), (65, 4391468), (130, 2195734), (260, 1097867), (281, 1015820), (562, 507910), (1124, 253955), (1405, 203164), (2810, 101582), (3653, 78140), (3907, 73060), (5620, 50791), (7306, 39070), (7814, 36530), (14612, 19535), (15628, 18265)]