21840975

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:182

約数の個数: 96

約数和(自身を含む): 45830400

約数和(自身を除く): 23989425

約数列:

[1, 3, 5, 9, 13, 15, 19, 25, 27, 39, 45, 57, 65, 75, 95, 117, 131, 135, 171, 195, 225, 247, 285, 325, 351, 393, 475, 513, 585, 655, 675, 741, 855, 975, 1179, 1235, 1425, 1703, 1755, 1965, 2223, 2489, 2565, 2925, 3275, 3537, 3705, 4275, 5109, 5895, 6175, 6669, 7467, 8515, 8775, 9825, 11115, 12445, 12825, 15327, 17685, 18525, 22401, 25545, 29475, 32357, 33345, 37335, 42575, 45981, 55575, 62225, 67203, 76635, 88425, 97071, 112005, 127725, 161785, 166725, 186675, 229905, 291213, 336015, 383175, 485355, 560025, 808925, 873639, 1149525, 1456065, 1680075, 2426775, 4368195, 7280325, 21840975]

約数ペア:

[(1, 21840975), (3, 7280325), (5, 4368195), (9, 2426775), (13, 1680075), (15, 1456065), (19, 1149525), (25, 873639), (27, 808925), (39, 560025), (45, 485355), (57, 383175), (65, 336015), (75, 291213), (95, 229905), (117, 186675), (131, 166725), (135, 161785), (171, 127725), (195, 112005), (225, 97071), (247, 88425), (285, 76635), (325, 67203), (351, 62225), (393, 55575), (475, 45981), (513, 42575), (585, 37335), (655, 33345), (675, 32357), (741, 29475), (855, 25545), (975, 22401), (1179, 18525), (1235, 17685), (1425, 15327), (1703, 12825), (1755, 12445), (1965, 11115), (2223, 9825), (2489, 8775), (2565, 8515), (2925, 7467), (3275, 6669), (3537, 6175), (3705, 5895), (4275, 5109)]