18942990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{419}}^1$

素因数の和:577

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 31134450

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 137, 165, 274, 330, 411, 419, 685, 822, 838, 1257, 1370, 1507, 2055, 2095, 2514, 3014, 4110, 4190, 4521, 4609, 6285, 7535, 9042, 9218, 12570, 13827, 15070, 22605, 23045, 27654, 45210, 46090, 57403, 69135, 114806, 138270, 172209, 287015, 344418, 574030, 631433, 861045, 1262866, 1722090, 1894299, 3157165, 3788598, 6314330, 9471495, 18942990]

約数ペア:

[(1, 18942990), (2, 9471495), (3, 6314330), (5, 3788598), (6, 3157165), (10, 1894299), (11, 1722090), (15, 1262866), (22, 861045), (30, 631433), (33, 574030), (55, 344418), (66, 287015), (110, 172209), (137, 138270), (165, 114806), (274, 69135), (330, 57403), (411, 46090), (419, 45210), (685, 27654), (822, 23045), (838, 22605), (1257, 15070), (1370, 13827), (1507, 12570), (2055, 9218), (2095, 9042), (2514, 7535), (3014, 6285), (4110, 4609), (4190, 4521)]