20040320

素因数分解:

$2^7\times 5^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 48452040

約数和(自身を除く): 28411720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 173, 181, 320, 346, 362, 640, 692, 724, 865, 905, 1384, 1448, 1730, 1810, 2768, 2896, 3460, 3620, 5536, 5792, 6920, 7240, 11072, 11584, 13840, 14480, 22144, 23168, 27680, 28960, 31313, 55360, 57920, 62626, 110720, 115840, 125252, 156565, 250504, 313130, 501008, 626260, 1002016, 1252520, 2004032, 2505040, 4008064, 5010080, 10020160, 20040320]

約数ペア:

[(1, 20040320), (2, 10020160), (4, 5010080), (5, 4008064), (8, 2505040), (10, 2004032), (16, 1252520), (20, 1002016), (32, 626260), (40, 501008), (64, 313130), (80, 250504), (128, 156565), (160, 125252), (173, 115840), (181, 110720), (320, 62626), (346, 57920), (362, 55360), (640, 31313), (692, 28960), (724, 27680), (865, 23168), (905, 22144), (1384, 14480), (1448, 13840), (1730, 11584), (1810, 11072), (2768, 7240), (2896, 6920), (3460, 5792), (3620, 5536)]