21321900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 144

約数和(自身を含む): 70308000

約数和(自身を除く): 48986100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 53, 54, 60, 75, 90, 100, 106, 108, 135, 149, 150, 159, 180, 212, 225, 265, 270, 298, 300, 318, 447, 450, 477, 530, 540, 596, 636, 675, 745, 795, 894, 900, 954, 1060, 1325, 1341, 1350, 1431, 1490, 1590, 1788, 1908, 2235, 2385, 2650, 2682, 2700, 2862, 2980, 3180, 3725, 3975, 4023, 4470, 4770, 5300, 5364, 5724, 6705, 7155, 7450, 7897, 7950, 8046, 8940, 9540, 11175, 11925, 13410, 14310, 14900, 15794, 15900, 16092, 20115, 22350, 23691, 23850, 26820, 28620, 31588, 33525, 35775, 39485, 40230, 44700, 47382, 47700, 67050, 71073, 71550, 78970, 80460, 94764, 100575, 118455, 134100, 142146, 143100, 157940, 197425, 201150, 213219, 236910, 284292, 355365, 394850, 402300, 426438, 473820, 592275, 710730, 789700, 852876, 1066095, 1184550, 1421460, 1776825, 2132190, 2369100, 3553650, 4264380, 5330475, 7107300, 10660950, 21321900]

約数ペア:

[(1, 21321900), (2, 10660950), (3, 7107300), (4, 5330475), (5, 4264380), (6, 3553650), (9, 2369100), (10, 2132190), (12, 1776825), (15, 1421460), (18, 1184550), (20, 1066095), (25, 852876), (27, 789700), (30, 710730), (36, 592275), (45, 473820), (50, 426438), (53, 402300), (54, 394850), (60, 355365), (75, 284292), (90, 236910), (100, 213219), (106, 201150), (108, 197425), (135, 157940), (149, 143100), (150, 142146), (159, 134100), (180, 118455), (212, 100575), (225, 94764), (265, 80460), (270, 78970), (298, 71550), (300, 71073), (318, 67050), (447, 47700), (450, 47382), (477, 44700), (530, 40230), (540, 39485), (596, 35775), (636, 33525), (675, 31588), (745, 28620), (795, 26820), (894, 23850), (900, 23691), (954, 22350), (1060, 20115), (1325, 16092), (1341, 15900), (1350, 15794), (1431, 14900), (1490, 14310), (1590, 13410), (1788, 11925), (1908, 11175), (2235, 9540), (2385, 8940), (2650, 8046), (2682, 7950), (2700, 7897), (2862, 7450), (2980, 7155), (3180, 6705), (3725, 5724), (3975, 5364), (4023, 5300), (4470, 4770)]