21788325

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^2\times {\mathrm{191}}^1$

素因数の和:236

約数の個数: 72

約数和(自身を含む): 43568640

約数和(自身を除く): 21780315

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 169, 191, 195, 225, 325, 351, 507, 573, 585, 675, 845, 955, 975, 1521, 1719, 1755, 2483, 2535, 2865, 2925, 4225, 4563, 4775, 5157, 7449, 7605, 8595, 8775, 12415, 12675, 14325, 22347, 22815, 25785, 32279, 37245, 38025, 42975, 62075, 67041, 96837, 111735, 114075, 128925, 161395, 186225, 290511, 335205, 484185, 558675, 806975, 871533, 1452555, 1676025, 2420925, 4357665, 7262775, 21788325]

約数ペア:

[(1, 21788325), (3, 7262775), (5, 4357665), (9, 2420925), (13, 1676025), (15, 1452555), (25, 871533), (27, 806975), (39, 558675), (45, 484185), (65, 335205), (75, 290511), (117, 186225), (135, 161395), (169, 128925), (191, 114075), (195, 111735), (225, 96837), (325, 67041), (351, 62075), (507, 42975), (573, 38025), (585, 37245), (675, 32279), (845, 25785), (955, 22815), (975, 22347), (1521, 14325), (1719, 12675), (1755, 12415), (2483, 8775), (2535, 8595), (2865, 7605), (2925, 7449), (4225, 5157), (4563, 4775)]