21000279820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1\times {\mathrm{14431}}^1$

素因数の和:14675

約数の個数: 96

約数和(自身を含む): 49388613120

約数和(自身を除く): 28388333300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 193, 260, 290, 377, 386, 580, 754, 772, 965, 1508, 1885, 1930, 2509, 3770, 3860, 5018, 5597, 7540, 10036, 11194, 12545, 14431, 22388, 25090, 27985, 28862, 50180, 55970, 57724, 72155, 72761, 111940, 144310, 145522, 187603, 288620, 291044, 363805, 375206, 418499, 727610, 750412, 836998, 938015, 1455220, 1673996, 1876030, 2092495, 2785183, 3752060, 4184990, 5440487, 5570366, 8369980, 10880974, 11140732, 13925915, 21761948, 27202435, 27851830, 36207379, 54404870, 55703660, 72414758, 80770307, 108809740, 144829516, 161540614, 181036895, 323081228, 362073790, 403851535, 724147580, 807703070, 1050013991, 1615406140, 2100027982, 4200055964, 5250069955, 10500139910, 21000279820]

約数ペア:

[(1, 21000279820), (2, 10500139910), (4, 5250069955), (5, 4200055964), (10, 2100027982), (13, 1615406140), (20, 1050013991), (26, 807703070), (29, 724147580), (52, 403851535), (58, 362073790), (65, 323081228), (116, 181036895), (130, 161540614), (145, 144829516), (193, 108809740), (260, 80770307), (290, 72414758), (377, 55703660), (386, 54404870), (580, 36207379), (754, 27851830), (772, 27202435), (965, 21761948), (1508, 13925915), (1885, 11140732), (1930, 10880974), (2509, 8369980), (3770, 5570366), (3860, 5440487), (5018, 4184990), (5597, 3752060), (7540, 2785183), (10036, 2092495), (11194, 1876030), (12545, 1673996), (14431, 1455220), (22388, 938015), (25090, 836998), (27985, 750412), (28862, 727610), (50180, 418499), (55970, 375206), (57724, 363805), (72155, 291044), (72761, 288620), (111940, 187603), (144310, 145522)]