21845940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4091}}^1$

素因数の和:4192

約数の個数: 48

約数和(自身を含む): 61871040

約数和(自身を除く): 40025100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 4091, 5340, 8182, 12273, 16364, 20455, 24546, 40910, 49092, 61365, 81820, 122730, 245460, 364099, 728198, 1092297, 1456396, 1820495, 2184594, 3640990, 4369188, 5461485, 7281980, 10922970, 21845940]

約数ペア:

[(1, 21845940), (2, 10922970), (3, 7281980), (4, 5461485), (5, 4369188), (6, 3640990), (10, 2184594), (12, 1820495), (15, 1456396), (20, 1092297), (30, 728198), (60, 364099), (89, 245460), (178, 122730), (267, 81820), (356, 61365), (445, 49092), (534, 40910), (890, 24546), (1068, 20455), (1335, 16364), (1780, 12273), (2670, 8182), (4091, 5340)]