21374028

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{419}}^1$

素因数の和:551

約数の個数: 72

約数和(自身を含む): 58858800

約数和(自身を除く): 37484772

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 109, 117, 156, 218, 234, 327, 419, 436, 468, 654, 838, 981, 1257, 1308, 1417, 1676, 1962, 2514, 2834, 3771, 3924, 4251, 5028, 5447, 5668, 7542, 8502, 10894, 12753, 15084, 16341, 17004, 21788, 25506, 32682, 45671, 49023, 51012, 65364, 91342, 98046, 137013, 182684, 196092, 274026, 411039, 548052, 593723, 822078, 1187446, 1644156, 1781169, 2374892, 3562338, 5343507, 7124676, 10687014, 21374028]

約数ペア:

[(1, 21374028), (2, 10687014), (3, 7124676), (4, 5343507), (6, 3562338), (9, 2374892), (12, 1781169), (13, 1644156), (18, 1187446), (26, 822078), (36, 593723), (39, 548052), (52, 411039), (78, 274026), (109, 196092), (117, 182684), (156, 137013), (218, 98046), (234, 91342), (327, 65364), (419, 51012), (436, 49023), (468, 45671), (654, 32682), (838, 25506), (981, 21788), (1257, 17004), (1308, 16341), (1417, 15084), (1676, 12753), (1962, 10894), (2514, 8502), (2834, 7542), (3771, 5668), (3924, 5447), (4251, 5028)]