279577480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{863}}^1$

素因数の和:983

約数の個数: 128

約数和(自身を含む): 783820800

約数和(自身を除く): 504243320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 89, 91, 104, 130, 140, 178, 182, 260, 280, 356, 364, 445, 455, 520, 623, 712, 728, 863, 890, 910, 1157, 1246, 1726, 1780, 1820, 2314, 2492, 3115, 3452, 3560, 3640, 4315, 4628, 4984, 5785, 6041, 6230, 6904, 8099, 8630, 9256, 11219, 11570, 12082, 12460, 16198, 17260, 22438, 23140, 24164, 24920, 30205, 32396, 34520, 40495, 44876, 46280, 48328, 56095, 60410, 64792, 76807, 78533, 80990, 89752, 112190, 120820, 153614, 157066, 161980, 224380, 241640, 307228, 314132, 323960, 384035, 392665, 448760, 537649, 614456, 628264, 768070, 785330, 998491, 1075298, 1536140, 1570660, 1996982, 2150596, 2688245, 3072280, 3141320, 3993964, 4301192, 4992455, 5376490, 6989437, 7987928, 9984910, 10752980, 13978874, 19969820, 21505960, 27957748, 34947185, 39939640, 55915496, 69894370, 139788740, 279577480]

約数ペア:

[(1, 279577480), (2, 139788740), (4, 69894370), (5, 55915496), (7, 39939640), (8, 34947185), (10, 27957748), (13, 21505960), (14, 19969820), (20, 13978874), (26, 10752980), (28, 9984910), (35, 7987928), (40, 6989437), (52, 5376490), (56, 4992455), (65, 4301192), (70, 3993964), (89, 3141320), (91, 3072280), (104, 2688245), (130, 2150596), (140, 1996982), (178, 1570660), (182, 1536140), (260, 1075298), (280, 998491), (356, 785330), (364, 768070), (445, 628264), (455, 614456), (520, 537649), (623, 448760), (712, 392665), (728, 384035), (863, 323960), (890, 314132), (910, 307228), (1157, 241640), (1246, 224380), (1726, 161980), (1780, 157066), (1820, 153614), (2314, 120820), (2492, 112190), (3115, 89752), (3452, 80990), (3560, 78533), (3640, 76807), (4315, 64792), (4628, 60410), (4984, 56095), (5785, 48328), (6041, 46280), (6230, 44876), (6904, 40495), (8099, 34520), (8630, 32396), (9256, 30205), (11219, 24920), (11570, 24164), (12082, 23140), (12460, 22438), (16198, 17260)]