18939904

素因数分解:

$2^{16}\times {\mathrm{17}}^2$

素因数の和:66

約数の個数: 51

約数和(自身を含む): 40238797

約数和(自身を除く): 21298893

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 289, 512, 544, 578, 1024, 1088, 1156, 2048, 2176, 2312, 4096, 4352, 4624, 8192, 8704, 9248, 16384, 17408, 18496, 32768, 34816, 36992, 65536, 69632, 73984, 139264, 147968, 278528, 295936, 557056, 591872, 1114112, 1183744, 2367488, 4734976, 9469952, 18939904]

約数ペア:

[(1, 18939904), (2, 9469952), (4, 4734976), (8, 2367488), (16, 1183744), (17, 1114112), (32, 591872), (34, 557056), (64, 295936), (68, 278528), (128, 147968), (136, 139264), (256, 73984), (272, 69632), (289, 65536), (512, 36992), (544, 34816), (578, 32768), (1024, 18496), (1088, 17408), (1156, 16384), (2048, 9248), (2176, 8704), (2312, 8192), (4096, 4624)]