21528045

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:160

約数の個数: 128

約数和(自身を含む): 50688000

約数和(自身を除く): 29159955

約数列:

[1, 3, 5, 7, 9, 11, 15, 19, 21, 27, 33, 35, 45, 55, 57, 63, 77, 95, 99, 105, 109, 133, 135, 165, 171, 189, 209, 231, 285, 297, 315, 327, 385, 399, 495, 513, 545, 627, 665, 693, 763, 855, 945, 981, 1045, 1155, 1197, 1199, 1463, 1485, 1635, 1881, 1995, 2071, 2079, 2289, 2565, 2943, 3135, 3465, 3591, 3597, 3815, 4389, 4905, 5643, 5985, 5995, 6213, 6867, 7315, 8393, 9405, 10355, 10395, 10791, 11445, 13167, 14497, 14715, 17955, 17985, 18639, 20601, 21945, 22781, 25179, 28215, 31065, 32373, 34335, 39501, 41965, 43491, 53955, 55917, 65835, 68343, 72485, 75537, 93195, 103005, 113905, 125895, 130473, 159467, 161865, 197505, 205029, 217455, 226611, 279585, 341715, 377685, 391419, 478401, 615087, 652365, 797335, 1025145, 1133055, 1435203, 1957095, 2392005, 3075435, 4305609, 7176015, 21528045]

約数ペア:

[(1, 21528045), (3, 7176015), (5, 4305609), (7, 3075435), (9, 2392005), (11, 1957095), (15, 1435203), (19, 1133055), (21, 1025145), (27, 797335), (33, 652365), (35, 615087), (45, 478401), (55, 391419), (57, 377685), (63, 341715), (77, 279585), (95, 226611), (99, 217455), (105, 205029), (109, 197505), (133, 161865), (135, 159467), (165, 130473), (171, 125895), (189, 113905), (209, 103005), (231, 93195), (285, 75537), (297, 72485), (315, 68343), (327, 65835), (385, 55917), (399, 53955), (495, 43491), (513, 41965), (545, 39501), (627, 34335), (665, 32373), (693, 31065), (763, 28215), (855, 25179), (945, 22781), (981, 21945), (1045, 20601), (1155, 18639), (1197, 17985), (1199, 17955), (1463, 14715), (1485, 14497), (1635, 13167), (1881, 11445), (1995, 10791), (2071, 10395), (2079, 10355), (2289, 9405), (2565, 8393), (2943, 7315), (3135, 6867), (3465, 6213), (3591, 5995), (3597, 5985), (3815, 5643), (4389, 4905)]