81448640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2797}}^1$

素因数の和:2834

約数の個数: 112

約数和(自身を含む): 238792512

約数和(自身を除く): 157343872

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 728, 832, 910, 1040, 1120, 1456, 1820, 2080, 2240, 2797, 2912, 3640, 4160, 5594, 5824, 7280, 11188, 13985, 14560, 19579, 22376, 27970, 29120, 36361, 39158, 44752, 55940, 72722, 78316, 89504, 97895, 111880, 145444, 156632, 179008, 181805, 195790, 223760, 254527, 290888, 313264, 363610, 391580, 447520, 509054, 581776, 626528, 727220, 783160, 895040, 1018108, 1163552, 1253056, 1272635, 1454440, 1566320, 2036216, 2327104, 2545270, 2908880, 3132640, 4072432, 5090540, 5817760, 6265280, 8144864, 10181080, 11635520, 16289728, 20362160, 40724320, 81448640]

約数ペア:

[(1, 81448640), (2, 40724320), (4, 20362160), (5, 16289728), (7, 11635520), (8, 10181080), (10, 8144864), (13, 6265280), (14, 5817760), (16, 5090540), (20, 4072432), (26, 3132640), (28, 2908880), (32, 2545270), (35, 2327104), (40, 2036216), (52, 1566320), (56, 1454440), (64, 1272635), (65, 1253056), (70, 1163552), (80, 1018108), (91, 895040), (104, 783160), (112, 727220), (130, 626528), (140, 581776), (160, 509054), (182, 447520), (208, 391580), (224, 363610), (260, 313264), (280, 290888), (320, 254527), (364, 223760), (416, 195790), (448, 181805), (455, 179008), (520, 156632), (560, 145444), (728, 111880), (832, 97895), (910, 89504), (1040, 78316), (1120, 72722), (1456, 55940), (1820, 44752), (2080, 39158), (2240, 36361), (2797, 29120), (2912, 27970), (3640, 22376), (4160, 19579), (5594, 14560), (5824, 13985), (7280, 11188)]