21319844

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1583}}^1$

素因数の和:1644

約数の個数: 48

約数和(自身を含む): 47190528

約数和(自身を除く): 25870684

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 52, 74, 91, 148, 182, 259, 364, 481, 518, 962, 1036, 1583, 1924, 3166, 3367, 6332, 6734, 11081, 13468, 20579, 22162, 41158, 44324, 58571, 82316, 117142, 144053, 234284, 288106, 409997, 576212, 761423, 819994, 1522846, 1639988, 3045692, 5329961, 10659922, 21319844]

約数ペア:

[(1, 21319844), (2, 10659922), (4, 5329961), (7, 3045692), (13, 1639988), (14, 1522846), (26, 819994), (28, 761423), (37, 576212), (52, 409997), (74, 288106), (91, 234284), (148, 144053), (182, 117142), (259, 82316), (364, 58571), (481, 44324), (518, 41158), (962, 22162), (1036, 20579), (1583, 13468), (1924, 11081), (3166, 6734), (3367, 6332)]