27920640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:696

約数の個数: 144

約数和(自身を含む): 97425216

約数和(自身を除く): 69504576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 128, 132, 160, 165, 176, 192, 220, 240, 256, 264, 320, 330, 352, 384, 440, 480, 528, 640, 660, 661, 704, 768, 880, 960, 1056, 1280, 1320, 1322, 1408, 1760, 1920, 1983, 2112, 2640, 2644, 2816, 3305, 3520, 3840, 3966, 4224, 5280, 5288, 6610, 7040, 7271, 7932, 8448, 9915, 10560, 10576, 13220, 14080, 14542, 15864, 19830, 21120, 21152, 21813, 26440, 29084, 31728, 36355, 39660, 42240, 42304, 43626, 52880, 58168, 63456, 72710, 79320, 84608, 87252, 105760, 109065, 116336, 126912, 145420, 158640, 169216, 174504, 211520, 218130, 232672, 253824, 290840, 317280, 349008, 423040, 436260, 465344, 507648, 581680, 634560, 698016, 846080, 872520, 930688, 1163360, 1269120, 1396032, 1745040, 1861376, 2326720, 2538240, 2792064, 3490080, 4653440, 5584128, 6980160, 9306880, 13960320, 27920640]

約数ペア:

[(1, 27920640), (2, 13960320), (3, 9306880), (4, 6980160), (5, 5584128), (6, 4653440), (8, 3490080), (10, 2792064), (11, 2538240), (12, 2326720), (15, 1861376), (16, 1745040), (20, 1396032), (22, 1269120), (24, 1163360), (30, 930688), (32, 872520), (33, 846080), (40, 698016), (44, 634560), (48, 581680), (55, 507648), (60, 465344), (64, 436260), (66, 423040), (80, 349008), (88, 317280), (96, 290840), (110, 253824), (120, 232672), (128, 218130), (132, 211520), (160, 174504), (165, 169216), (176, 158640), (192, 145420), (220, 126912), (240, 116336), (256, 109065), (264, 105760), (320, 87252), (330, 84608), (352, 79320), (384, 72710), (440, 63456), (480, 58168), (528, 52880), (640, 43626), (660, 42304), (661, 42240), (704, 39660), (768, 36355), (880, 31728), (960, 29084), (1056, 26440), (1280, 21813), (1320, 21152), (1322, 21120), (1408, 19830), (1760, 15864), (1920, 14542), (1983, 14080), (2112, 13220), (2640, 10576), (2644, 10560), (2816, 9915), (3305, 8448), (3520, 7932), (3840, 7271), (3966, 7040), (4224, 6610), (5280, 5288)]