21018942400

素因数分解:

$2^6\times 5^2\times {\mathrm{31}}^1\times {\mathrm{423769}}^1$

素因数の和:423822

約数の個数: 84

約数和(自身を含む): 53388239680

約数和(自身を除く): 32369297280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 155, 160, 200, 248, 310, 320, 400, 496, 620, 775, 800, 992, 1240, 1550, 1600, 1984, 2480, 3100, 4960, 6200, 9920, 12400, 24800, 49600, 423769, 847538, 1695076, 2118845, 3390152, 4237690, 6780304, 8475380, 10594225, 13136839, 13560608, 16950760, 21188450, 26273678, 27121216, 33901520, 42376900, 52547356, 65684195, 67803040, 84753800, 105094712, 131368390, 135606080, 169507600, 210189424, 262736780, 328420975, 339015200, 420378848, 525473560, 656841950, 678030400, 840757696, 1050947120, 1313683900, 2101894240, 2627367800, 4203788480, 5254735600, 10509471200, 21018942400]

約数ペア:

[(1, 21018942400), (2, 10509471200), (4, 5254735600), (5, 4203788480), (8, 2627367800), (10, 2101894240), (16, 1313683900), (20, 1050947120), (25, 840757696), (31, 678030400), (32, 656841950), (40, 525473560), (50, 420378848), (62, 339015200), (64, 328420975), (80, 262736780), (100, 210189424), (124, 169507600), (155, 135606080), (160, 131368390), (200, 105094712), (248, 84753800), (310, 67803040), (320, 65684195), (400, 52547356), (496, 42376900), (620, 33901520), (775, 27121216), (800, 26273678), (992, 21188450), (1240, 16950760), (1550, 13560608), (1600, 13136839), (1984, 10594225), (2480, 8475380), (3100, 6780304), (4960, 4237690), (6200, 3390152), (9920, 2118845), (12400, 1695076), (24800, 847538), (49600, 423769)]