21988746

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 80

約数和(自身を含む): 54336744

約数和(自身を除く): 32347998

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 53, 54, 78, 81, 106, 117, 159, 162, 197, 234, 318, 351, 394, 477, 591, 689, 702, 954, 1053, 1182, 1378, 1431, 1773, 2067, 2106, 2561, 2862, 3546, 4134, 4293, 5122, 5319, 6201, 7683, 8586, 10441, 10638, 12402, 15366, 15957, 18603, 20882, 23049, 31323, 31914, 37206, 46098, 55809, 62646, 69147, 93969, 111618, 135733, 138294, 187938, 207441, 271466, 281907, 407199, 414882, 563814, 814398, 845721, 1221597, 1691442, 2443194, 3664791, 7329582, 10994373, 21988746]

約数ペア:

[(1, 21988746), (2, 10994373), (3, 7329582), (6, 3664791), (9, 2443194), (13, 1691442), (18, 1221597), (26, 845721), (27, 814398), (39, 563814), (53, 414882), (54, 407199), (78, 281907), (81, 271466), (106, 207441), (117, 187938), (159, 138294), (162, 135733), (197, 111618), (234, 93969), (318, 69147), (351, 62646), (394, 55809), (477, 46098), (591, 37206), (689, 31914), (702, 31323), (954, 23049), (1053, 20882), (1182, 18603), (1378, 15957), (1431, 15366), (1773, 12402), (2067, 10638), (2106, 10441), (2561, 8586), (2862, 7683), (3546, 6201), (4134, 5319), (4293, 5122)]