21069400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:245

約数の個数: 96

約数和(自身を含む): 54661680

約数和(自身を除く): 33592280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 61, 88, 100, 110, 122, 157, 200, 220, 244, 275, 305, 314, 440, 488, 550, 610, 628, 671, 785, 1100, 1220, 1256, 1342, 1525, 1570, 1727, 2200, 2440, 2684, 3050, 3140, 3355, 3454, 3925, 5368, 6100, 6280, 6710, 6908, 7850, 8635, 9577, 12200, 13420, 13816, 15700, 16775, 17270, 19154, 26840, 31400, 33550, 34540, 38308, 43175, 47885, 67100, 69080, 76616, 86350, 95770, 105347, 134200, 172700, 191540, 210694, 239425, 345400, 383080, 421388, 478850, 526735, 842776, 957700, 1053470, 1915400, 2106940, 2633675, 4213880, 5267350, 10534700, 21069400]

約数ペア:

[(1, 21069400), (2, 10534700), (4, 5267350), (5, 4213880), (8, 2633675), (10, 2106940), (11, 1915400), (20, 1053470), (22, 957700), (25, 842776), (40, 526735), (44, 478850), (50, 421388), (55, 383080), (61, 345400), (88, 239425), (100, 210694), (110, 191540), (122, 172700), (157, 134200), (200, 105347), (220, 95770), (244, 86350), (275, 76616), (305, 69080), (314, 67100), (440, 47885), (488, 43175), (550, 38308), (610, 34540), (628, 33550), (671, 31400), (785, 26840), (1100, 19154), (1220, 17270), (1256, 16775), (1342, 15700), (1525, 13816), (1570, 13420), (1727, 12200), (2200, 9577), (2440, 8635), (2684, 7850), (3050, 6908), (3140, 6710), (3355, 6280), (3454, 6100), (3925, 5368)]