81931920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{6967}}^1$

素因数の和:6997

約数の個数: 120

約数和(自身を含む): 295498944

約数和(自身を除く): 213567024

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 6967, 11760, 13934, 20901, 27868, 34835, 41802, 48769, 55736, 69670, 83604, 97538, 104505, 111472, 139340, 146307, 167208, 195076, 209010, 243845, 278680, 292614, 334416, 341383, 390152, 418020, 487690, 557360, 585228, 682766, 731535, 780304, 836040, 975380, 1024149, 1170456, 1365532, 1463070, 1672080, 1706915, 1950760, 2048298, 2340912, 2731064, 2926140, 3413830, 3901520, 4096596, 5120745, 5462128, 5852280, 6827660, 8193192, 10241490, 11704560, 13655320, 16386384, 20482980, 27310640, 40965960, 81931920]

約数ペア:

[(1, 81931920), (2, 40965960), (3, 27310640), (4, 20482980), (5, 16386384), (6, 13655320), (7, 11704560), (8, 10241490), (10, 8193192), (12, 6827660), (14, 5852280), (15, 5462128), (16, 5120745), (20, 4096596), (21, 3901520), (24, 3413830), (28, 2926140), (30, 2731064), (35, 2340912), (40, 2048298), (42, 1950760), (48, 1706915), (49, 1672080), (56, 1463070), (60, 1365532), (70, 1170456), (80, 1024149), (84, 975380), (98, 836040), (105, 780304), (112, 731535), (120, 682766), (140, 585228), (147, 557360), (168, 487690), (196, 418020), (210, 390152), (240, 341383), (245, 334416), (280, 292614), (294, 278680), (336, 243845), (392, 209010), (420, 195076), (490, 167208), (560, 146307), (588, 139340), (735, 111472), (784, 104505), (840, 97538), (980, 83604), (1176, 69670), (1470, 55736), (1680, 48769), (1960, 41802), (2352, 34835), (2940, 27868), (3920, 20901), (5880, 13934), (6967, 11760)]