21031296500

素因数分解:

$2^2\times 5^3\times {\mathrm{191}}^2\times {\mathrm{1153}}^1$

素因数の和:1554

約数の個数: 72

約数和(自身を含む): 46214141064

約数和(自身を除く): 25182844564

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 191, 250, 382, 500, 764, 955, 1153, 1910, 2306, 3820, 4612, 4775, 5765, 9550, 11530, 19100, 23060, 23875, 28825, 36481, 47750, 57650, 72962, 95500, 115300, 144125, 145924, 182405, 220223, 288250, 364810, 440446, 576500, 729620, 880892, 912025, 1101115, 1824050, 2202230, 3648100, 4404460, 4560125, 5505575, 9120250, 11011150, 18240500, 22022300, 27527875, 42062593, 55055750, 84125186, 110111500, 168250372, 210312965, 420625930, 841251860, 1051564825, 2103129650, 4206259300, 5257824125, 10515648250, 21031296500]

約数ペア:

[(1, 21031296500), (2, 10515648250), (4, 5257824125), (5, 4206259300), (10, 2103129650), (20, 1051564825), (25, 841251860), (50, 420625930), (100, 210312965), (125, 168250372), (191, 110111500), (250, 84125186), (382, 55055750), (500, 42062593), (764, 27527875), (955, 22022300), (1153, 18240500), (1910, 11011150), (2306, 9120250), (3820, 5505575), (4612, 4560125), (4775, 4404460), (5765, 3648100), (9550, 2202230), (11530, 1824050), (19100, 1101115), (23060, 912025), (23875, 880892), (28825, 729620), (36481, 576500), (47750, 440446), (57650, 364810), (72962, 288250), (95500, 220223), (115300, 182405), (144125, 145924)]