21392550

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{137}}^1\times {\mathrm{347}}^1$

素因数の和:502

約数の個数: 72

約数和(自身を含む): 58061016

約数和(自身を除く): 36668466

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 137, 150, 225, 274, 347, 411, 450, 685, 694, 822, 1041, 1233, 1370, 1735, 2055, 2082, 2466, 3123, 3425, 3470, 4110, 5205, 6165, 6246, 6850, 8675, 10275, 10410, 12330, 15615, 17350, 20550, 26025, 30825, 31230, 47539, 52050, 61650, 78075, 95078, 142617, 156150, 237695, 285234, 427851, 475390, 713085, 855702, 1188475, 1426170, 2139255, 2376950, 3565425, 4278510, 7130850, 10696275, 21392550]

約数ペア:

[(1, 21392550), (2, 10696275), (3, 7130850), (5, 4278510), (6, 3565425), (9, 2376950), (10, 2139255), (15, 1426170), (18, 1188475), (25, 855702), (30, 713085), (45, 475390), (50, 427851), (75, 285234), (90, 237695), (137, 156150), (150, 142617), (225, 95078), (274, 78075), (347, 61650), (411, 52050), (450, 47539), (685, 31230), (694, 30825), (822, 26025), (1041, 20550), (1233, 17350), (1370, 15615), (1735, 12330), (2055, 10410), (2082, 10275), (2466, 8675), (3123, 6850), (3425, 6246), (3470, 6165), (4110, 5205)]