30721005

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:128

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 38398995

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 29, 35, 45, 57, 59, 63, 87, 95, 105, 133, 135, 145, 171, 177, 189, 203, 261, 285, 295, 315, 399, 413, 435, 513, 531, 551, 609, 665, 783, 855, 885, 945, 1015, 1121, 1197, 1239, 1305, 1593, 1653, 1711, 1827, 1995, 2065, 2565, 2655, 2755, 3045, 3363, 3591, 3717, 3857, 3915, 4959, 5133, 5481, 5605, 5985, 6195, 7847, 7965, 8265, 8555, 9135, 10089, 11151, 11571, 11977, 14877, 15399, 16815, 17955, 18585, 19285, 23541, 24795, 25665, 27405, 30267, 32509, 34713, 35931, 39235, 46197, 50445, 55755, 57855, 59885, 70623, 74385, 76995, 97527, 104139, 107793, 117705, 151335, 162545, 173565, 179655, 211869, 227563, 230985, 292581, 323379, 353115, 487635, 520695, 538965, 682689, 877743, 1059345, 1137815, 1462905, 1616895, 2048067, 3413445, 4388715, 6144201, 10240335, 30721005]

約数ペア:

[(1, 30721005), (3, 10240335), (5, 6144201), (7, 4388715), (9, 3413445), (15, 2048067), (19, 1616895), (21, 1462905), (27, 1137815), (29, 1059345), (35, 877743), (45, 682689), (57, 538965), (59, 520695), (63, 487635), (87, 353115), (95, 323379), (105, 292581), (133, 230985), (135, 227563), (145, 211869), (171, 179655), (177, 173565), (189, 162545), (203, 151335), (261, 117705), (285, 107793), (295, 104139), (315, 97527), (399, 76995), (413, 74385), (435, 70623), (513, 59885), (531, 57855), (551, 55755), (609, 50445), (665, 46197), (783, 39235), (855, 35931), (885, 34713), (945, 32509), (1015, 30267), (1121, 27405), (1197, 25665), (1239, 24795), (1305, 23541), (1593, 19285), (1653, 18585), (1711, 17955), (1827, 16815), (1995, 15399), (2065, 14877), (2565, 11977), (2655, 11571), (2755, 11151), (3045, 10089), (3363, 9135), (3591, 8555), (3717, 8265), (3857, 7965), (3915, 7847), (4959, 6195), (5133, 5985), (5481, 5605)]