20561640720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1278709}}^1$

素因数の和:1278792

約数の個数: 80

約数和(自身を含む): 64692496320

約数和(自身を除く): 44130855600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 67, 80, 120, 134, 201, 240, 268, 335, 402, 536, 670, 804, 1005, 1072, 1340, 1608, 2010, 2680, 3216, 4020, 5360, 8040, 16080, 1278709, 2557418, 3836127, 5114836, 6393545, 7672254, 10229672, 12787090, 15344508, 19180635, 20459344, 25574180, 30689016, 38361270, 51148360, 61378032, 76722540, 85673503, 102296720, 153445080, 171347006, 257020509, 306890160, 342694012, 428367515, 514041018, 685388024, 856735030, 1028082036, 1285102545, 1370776048, 1713470060, 2056164072, 2570205090, 3426940120, 4112328144, 5140410180, 6853880240, 10280820360, 20561640720]

約数ペア:

[(1, 20561640720), (2, 10280820360), (3, 6853880240), (4, 5140410180), (5, 4112328144), (6, 3426940120), (8, 2570205090), (10, 2056164072), (12, 1713470060), (15, 1370776048), (16, 1285102545), (20, 1028082036), (24, 856735030), (30, 685388024), (40, 514041018), (48, 428367515), (60, 342694012), (67, 306890160), (80, 257020509), (120, 171347006), (134, 153445080), (201, 102296720), (240, 85673503), (268, 76722540), (335, 61378032), (402, 51148360), (536, 38361270), (670, 30689016), (804, 25574180), (1005, 20459344), (1072, 19180635), (1340, 15344508), (1608, 12787090), (2010, 10229672), (2680, 7672254), (3216, 6393545), (4020, 5114836), (5360, 3836127), (8040, 2557418), (16080, 1278709)]