21094892

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1$

素因数の和:535

約数の個数: 72

約数和(自身を含む): 49067424

約数和(自身を除く): 27972532

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 49, 52, 68, 91, 98, 119, 182, 196, 221, 238, 364, 442, 476, 487, 637, 833, 884, 974, 1274, 1547, 1666, 1948, 2548, 3094, 3332, 3409, 6188, 6331, 6818, 8279, 10829, 12662, 13636, 16558, 21658, 23863, 25324, 33116, 43316, 44317, 47726, 57953, 88634, 95452, 107627, 115906, 177268, 215254, 231812, 310219, 405671, 430508, 620438, 753389, 811342, 1240876, 1506778, 1622684, 3013556, 5273723, 10547446, 21094892]

約数ペア:

[(1, 21094892), (2, 10547446), (4, 5273723), (7, 3013556), (13, 1622684), (14, 1506778), (17, 1240876), (26, 811342), (28, 753389), (34, 620438), (49, 430508), (52, 405671), (68, 310219), (91, 231812), (98, 215254), (119, 177268), (182, 115906), (196, 107627), (221, 95452), (238, 88634), (364, 57953), (442, 47726), (476, 44317), (487, 43316), (637, 33116), (833, 25324), (884, 23863), (974, 21658), (1274, 16558), (1547, 13636), (1666, 12662), (1948, 10829), (2548, 8279), (3094, 6818), (3332, 6331), (3409, 6188)]