278888960

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 160

約数和(自身を含む): 777807360

約数和(自身を除く): 498918400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 79, 80, 112, 128, 140, 158, 160, 197, 224, 256, 280, 316, 320, 394, 395, 448, 512, 553, 560, 632, 640, 788, 790, 896, 985, 1106, 1120, 1264, 1280, 1379, 1576, 1580, 1792, 1970, 2212, 2240, 2528, 2560, 2758, 2765, 3152, 3160, 3584, 3940, 4424, 4480, 5056, 5516, 5530, 6304, 6320, 6895, 7880, 8848, 8960, 10112, 11032, 11060, 12608, 12640, 13790, 15563, 15760, 17696, 17920, 20224, 22064, 22120, 25216, 25280, 27580, 31126, 31520, 35392, 40448, 44128, 44240, 50432, 50560, 55160, 62252, 63040, 70784, 77815, 88256, 88480, 100864, 101120, 108941, 110320, 124504, 126080, 141568, 155630, 176512, 176960, 202240, 217882, 220640, 249008, 252160, 283136, 311260, 353024, 353920, 435764, 441280, 498016, 504320, 544705, 622520, 706048, 707840, 871528, 882560, 996032, 1089410, 1245040, 1415680, 1743056, 1765120, 1992064, 2178820, 2490080, 3486112, 3530240, 3984128, 4357640, 4980160, 6972224, 7968256, 8715280, 9960320, 13944448, 17430560, 19920640, 27888896, 34861120, 39841280, 55777792, 69722240, 139444480, 278888960]

約数ペア:

[(1, 278888960), (2, 139444480), (4, 69722240), (5, 55777792), (7, 39841280), (8, 34861120), (10, 27888896), (14, 19920640), (16, 17430560), (20, 13944448), (28, 9960320), (32, 8715280), (35, 7968256), (40, 6972224), (56, 4980160), (64, 4357640), (70, 3984128), (79, 3530240), (80, 3486112), (112, 2490080), (128, 2178820), (140, 1992064), (158, 1765120), (160, 1743056), (197, 1415680), (224, 1245040), (256, 1089410), (280, 996032), (316, 882560), (320, 871528), (394, 707840), (395, 706048), (448, 622520), (512, 544705), (553, 504320), (560, 498016), (632, 441280), (640, 435764), (788, 353920), (790, 353024), (896, 311260), (985, 283136), (1106, 252160), (1120, 249008), (1264, 220640), (1280, 217882), (1379, 202240), (1576, 176960), (1580, 176512), (1792, 155630), (1970, 141568), (2212, 126080), (2240, 124504), (2528, 110320), (2560, 108941), (2758, 101120), (2765, 100864), (3152, 88480), (3160, 88256), (3584, 77815), (3940, 70784), (4424, 63040), (4480, 62252), (5056, 55160), (5516, 50560), (5530, 50432), (6304, 44240), (6320, 44128), (6895, 40448), (7880, 35392), (8848, 31520), (8960, 31126), (10112, 27580), (11032, 25280), (11060, 25216), (12608, 22120), (12640, 22064), (13790, 20224), (15563, 17920), (15760, 17696)]