21087300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5407}}^1$

素因数の和:5437

約数の個数: 72

約数和(自身を含む): 65718016

約数和(自身を除く): 44630716

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5407, 10814, 16221, 21628, 27035, 32442, 54070, 64884, 70291, 81105, 108140, 135175, 140582, 162210, 210873, 270350, 281164, 324420, 351455, 405525, 421746, 540700, 702910, 811050, 843492, 1054365, 1405820, 1622100, 1757275, 2108730, 3514550, 4217460, 5271825, 7029100, 10543650, 21087300]

約数ペア:

[(1, 21087300), (2, 10543650), (3, 7029100), (4, 5271825), (5, 4217460), (6, 3514550), (10, 2108730), (12, 1757275), (13, 1622100), (15, 1405820), (20, 1054365), (25, 843492), (26, 811050), (30, 702910), (39, 540700), (50, 421746), (52, 405525), (60, 351455), (65, 324420), (75, 281164), (78, 270350), (100, 210873), (130, 162210), (150, 140582), (156, 135175), (195, 108140), (260, 81105), (300, 70291), (325, 64884), (390, 54070), (650, 32442), (780, 27035), (975, 21628), (1300, 16221), (1950, 10814), (3900, 5407)]