20500697040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{274661}}^1$

素因数の和:274988

約数の個数: 80

約数和(自身を含む): 63756740736

約数和(自身を除く): 43256043696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 311, 622, 933, 1244, 1555, 1866, 2488, 3110, 3732, 4665, 4976, 6220, 7464, 9330, 12440, 14928, 18660, 24880, 37320, 74640, 274661, 549322, 823983, 1098644, 1373305, 1647966, 2197288, 2746610, 3295932, 4119915, 4394576, 5493220, 6591864, 8239830, 10986440, 13183728, 16479660, 21972880, 32959320, 65918640, 85419571, 170839142, 256258713, 341678284, 427097855, 512517426, 683356568, 854195710, 1025034852, 1281293565, 1366713136, 1708391420, 2050069704, 2562587130, 3416782840, 4100139408, 5125174260, 6833565680, 10250348520, 20500697040]

約数ペア:

[(1, 20500697040), (2, 10250348520), (3, 6833565680), (4, 5125174260), (5, 4100139408), (6, 3416782840), (8, 2562587130), (10, 2050069704), (12, 1708391420), (15, 1366713136), (16, 1281293565), (20, 1025034852), (24, 854195710), (30, 683356568), (40, 512517426), (48, 427097855), (60, 341678284), (80, 256258713), (120, 170839142), (240, 85419571), (311, 65918640), (622, 32959320), (933, 21972880), (1244, 16479660), (1555, 13183728), (1866, 10986440), (2488, 8239830), (3110, 6591864), (3732, 5493220), (4665, 4394576), (4976, 4119915), (6220, 3295932), (7464, 2746610), (9330, 2197288), (12440, 1647966), (14928, 1373305), (18660, 1098644), (24880, 823983), (37320, 549322), (74640, 274661)]