28314880

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2011}}^1$

素因数の和:2043

約数の個数: 72

約数和(自身を含む): 74025504

約数和(自身を除く): 45710624

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1760, 2011, 2816, 3520, 4022, 7040, 8044, 10055, 14080, 16088, 20110, 22121, 32176, 40220, 44242, 64352, 80440, 88484, 110605, 128704, 160880, 176968, 221210, 257408, 321760, 353936, 442420, 514816, 643520, 707872, 884840, 1287040, 1415744, 1769680, 2574080, 2831488, 3539360, 5662976, 7078720, 14157440, 28314880]

約数ペア:

[(1, 28314880), (2, 14157440), (4, 7078720), (5, 5662976), (8, 3539360), (10, 2831488), (11, 2574080), (16, 1769680), (20, 1415744), (22, 1287040), (32, 884840), (40, 707872), (44, 643520), (55, 514816), (64, 442420), (80, 353936), (88, 321760), (110, 257408), (128, 221210), (160, 176968), (176, 160880), (220, 128704), (256, 110605), (320, 88484), (352, 80440), (440, 64352), (640, 44242), (704, 40220), (880, 32176), (1280, 22121), (1408, 20110), (1760, 16088), (2011, 14080), (2816, 10055), (3520, 8044), (4022, 7040)]