21366046720

素因数分解:

$2^{18}\times 5^1\times {\mathrm{16301}}^1$

素因数の和:16342

約数の個数: 76

約数和(自身を含む): 51281560044

約数和(自身を除く): 29915513324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 8192, 10240, 16301, 16384, 20480, 32602, 32768, 40960, 65204, 65536, 81505, 81920, 130408, 131072, 163010, 163840, 260816, 262144, 326020, 327680, 521632, 652040, 655360, 1043264, 1304080, 1310720, 2086528, 2608160, 4173056, 5216320, 8346112, 10432640, 16692224, 20865280, 33384448, 41730560, 66768896, 83461120, 133537792, 166922240, 267075584, 333844480, 534151168, 667688960, 1068302336, 1335377920, 2136604672, 2670755840, 4273209344, 5341511680, 10683023360, 21366046720]

約数ペア:

[(1, 21366046720), (2, 10683023360), (4, 5341511680), (5, 4273209344), (8, 2670755840), (10, 2136604672), (16, 1335377920), (20, 1068302336), (32, 667688960), (40, 534151168), (64, 333844480), (80, 267075584), (128, 166922240), (160, 133537792), (256, 83461120), (320, 66768896), (512, 41730560), (640, 33384448), (1024, 20865280), (1280, 16692224), (2048, 10432640), (2560, 8346112), (4096, 5216320), (5120, 4173056), (8192, 2608160), (10240, 2086528), (16301, 1310720), (16384, 1304080), (20480, 1043264), (32602, 655360), (32768, 652040), (40960, 521632), (65204, 327680), (65536, 326020), (81505, 262144), (81920, 260816), (130408, 163840), (131072, 163010)]