21314295

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 39443040

約数和(自身を除く): 18128745

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 97, 171, 257, 285, 291, 485, 771, 855, 873, 1285, 1455, 1843, 2313, 3855, 4365, 4883, 5529, 9215, 11565, 14649, 16587, 24415, 24929, 27645, 43947, 73245, 74787, 82935, 124645, 219735, 224361, 373935, 473651, 1121805, 1420953, 2368255, 4262859, 7104765, 21314295]

約数ペア:

[(1, 21314295), (3, 7104765), (5, 4262859), (9, 2368255), (15, 1420953), (19, 1121805), (45, 473651), (57, 373935), (95, 224361), (97, 219735), (171, 124645), (257, 82935), (285, 74787), (291, 73245), (485, 43947), (771, 27645), (855, 24929), (873, 24415), (1285, 16587), (1455, 14649), (1843, 11565), (2313, 9215), (3855, 5529), (4365, 4883)]