20298740

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{269}}^1$

素因数の和:310

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 34133260

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 269, 308, 343, 385, 490, 538, 539, 686, 770, 980, 1076, 1078, 1345, 1372, 1540, 1715, 1883, 2156, 2690, 2695, 2959, 3430, 3766, 3773, 5380, 5390, 5918, 6860, 7532, 7546, 9415, 10780, 11836, 13181, 14795, 15092, 18830, 18865, 20713, 26362, 29590, 37660, 37730, 41426, 52724, 59180, 65905, 75460, 82852, 92267, 103565, 131810, 144991, 184534, 207130, 263620, 289982, 369068, 414260, 461335, 579964, 724955, 922670, 1014937, 1449910, 1845340, 2029874, 2899820, 4059748, 5074685, 10149370, 20298740]

約数ペア:

[(1, 20298740), (2, 10149370), (4, 5074685), (5, 4059748), (7, 2899820), (10, 2029874), (11, 1845340), (14, 1449910), (20, 1014937), (22, 922670), (28, 724955), (35, 579964), (44, 461335), (49, 414260), (55, 369068), (70, 289982), (77, 263620), (98, 207130), (110, 184534), (140, 144991), (154, 131810), (196, 103565), (220, 92267), (245, 82852), (269, 75460), (308, 65905), (343, 59180), (385, 52724), (490, 41426), (538, 37730), (539, 37660), (686, 29590), (770, 26362), (980, 20713), (1076, 18865), (1078, 18830), (1345, 15092), (1372, 14795), (1540, 13181), (1715, 11836), (1883, 10780), (2156, 9415), (2690, 7546), (2695, 7532), (2959, 6860), (3430, 5918), (3766, 5390), (3773, 5380)]