81677960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1181}}^1$

素因数の和:1231

約数の個数: 128

約数和(自身を含む): 238291200

約数和(自身を除く): 156613240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 91, 95, 104, 130, 133, 140, 152, 182, 190, 247, 260, 266, 280, 364, 380, 455, 494, 520, 532, 665, 728, 760, 910, 988, 1064, 1181, 1235, 1330, 1729, 1820, 1976, 2362, 2470, 2660, 3458, 3640, 4724, 4940, 5320, 5905, 6916, 8267, 8645, 9448, 9880, 11810, 13832, 15353, 16534, 17290, 22439, 23620, 30706, 33068, 34580, 41335, 44878, 47240, 61412, 66136, 69160, 76765, 82670, 89756, 107471, 112195, 122824, 153530, 157073, 165340, 179512, 214942, 224390, 291707, 307060, 314146, 330680, 429884, 448780, 537355, 583414, 614120, 628292, 785365, 859768, 897560, 1074710, 1166828, 1256584, 1458535, 1570730, 2041949, 2149420, 2333656, 2917070, 3141460, 4083898, 4298840, 5834140, 6282920, 8167796, 10209745, 11668280, 16335592, 20419490, 40838980, 81677960]

約数ペア:

[(1, 81677960), (2, 40838980), (4, 20419490), (5, 16335592), (7, 11668280), (8, 10209745), (10, 8167796), (13, 6282920), (14, 5834140), (19, 4298840), (20, 4083898), (26, 3141460), (28, 2917070), (35, 2333656), (38, 2149420), (40, 2041949), (52, 1570730), (56, 1458535), (65, 1256584), (70, 1166828), (76, 1074710), (91, 897560), (95, 859768), (104, 785365), (130, 628292), (133, 614120), (140, 583414), (152, 537355), (182, 448780), (190, 429884), (247, 330680), (260, 314146), (266, 307060), (280, 291707), (364, 224390), (380, 214942), (455, 179512), (494, 165340), (520, 157073), (532, 153530), (665, 122824), (728, 112195), (760, 107471), (910, 89756), (988, 82670), (1064, 76765), (1181, 69160), (1235, 66136), (1330, 61412), (1729, 47240), (1820, 44878), (1976, 41335), (2362, 34580), (2470, 33068), (2660, 30706), (3458, 23620), (3640, 22439), (4724, 17290), (4940, 16534), (5320, 15353), (5905, 13832), (6916, 11810), (8267, 9880), (8645, 9448)]