81561900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{38839}}^1$

素因数の和:38863

約数の個数: 72

約数和(自身を含む): 269704960

約数和(自身を除く): 188143060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 38839, 77678, 116517, 155356, 194195, 233034, 271873, 388390, 466068, 543746, 582585, 776780, 815619, 970975, 1087492, 1165170, 1359365, 1631238, 1941950, 2330340, 2718730, 2912925, 3262476, 3883900, 4078095, 5437460, 5825850, 6796825, 8156190, 11651700, 13593650, 16312380, 20390475, 27187300, 40780950, 81561900]

約数ペア:

[(1, 81561900), (2, 40780950), (3, 27187300), (4, 20390475), (5, 16312380), (6, 13593650), (7, 11651700), (10, 8156190), (12, 6796825), (14, 5825850), (15, 5437460), (20, 4078095), (21, 3883900), (25, 3262476), (28, 2912925), (30, 2718730), (35, 2330340), (42, 1941950), (50, 1631238), (60, 1359365), (70, 1165170), (75, 1087492), (84, 970975), (100, 815619), (105, 776780), (140, 582585), (150, 543746), (175, 466068), (210, 388390), (300, 271873), (350, 233034), (420, 194195), (525, 155356), (700, 116517), (1050, 77678), (2100, 38839)]