81660720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:227

約数の個数: 160

約数和(自身を含む): 264268800

約数和(自身を除く): 182608080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 59, 60, 73, 79, 80, 118, 120, 146, 158, 177, 219, 236, 237, 240, 292, 295, 316, 354, 365, 395, 438, 472, 474, 584, 590, 632, 708, 730, 790, 876, 885, 944, 948, 1095, 1168, 1180, 1185, 1264, 1416, 1460, 1580, 1752, 1770, 1896, 2190, 2360, 2370, 2832, 2920, 3160, 3504, 3540, 3792, 4307, 4380, 4661, 4720, 4740, 5767, 5840, 6320, 7080, 8614, 8760, 9322, 9480, 11534, 12921, 13983, 14160, 17228, 17301, 17520, 18644, 18960, 21535, 23068, 23305, 25842, 27966, 28835, 34456, 34602, 37288, 43070, 46136, 46610, 51684, 55932, 57670, 64605, 68912, 69204, 69915, 74576, 86140, 86505, 92272, 93220, 103368, 111864, 115340, 129210, 138408, 139830, 172280, 173010, 186440, 206736, 223728, 230680, 258420, 276816, 279660, 340253, 344560, 346020, 372880, 461360, 516840, 559320, 680506, 692040, 1020759, 1033680, 1118640, 1361012, 1384080, 1701265, 2041518, 2722024, 3402530, 4083036, 5103795, 5444048, 6805060, 8166072, 10207590, 13610120, 16332144, 20415180, 27220240, 40830360, 81660720]

約数ペア:

[(1, 81660720), (2, 40830360), (3, 27220240), (4, 20415180), (5, 16332144), (6, 13610120), (8, 10207590), (10, 8166072), (12, 6805060), (15, 5444048), (16, 5103795), (20, 4083036), (24, 3402530), (30, 2722024), (40, 2041518), (48, 1701265), (59, 1384080), (60, 1361012), (73, 1118640), (79, 1033680), (80, 1020759), (118, 692040), (120, 680506), (146, 559320), (158, 516840), (177, 461360), (219, 372880), (236, 346020), (237, 344560), (240, 340253), (292, 279660), (295, 276816), (316, 258420), (354, 230680), (365, 223728), (395, 206736), (438, 186440), (472, 173010), (474, 172280), (584, 139830), (590, 138408), (632, 129210), (708, 115340), (730, 111864), (790, 103368), (876, 93220), (885, 92272), (944, 86505), (948, 86140), (1095, 74576), (1168, 69915), (1180, 69204), (1185, 68912), (1264, 64605), (1416, 57670), (1460, 55932), (1580, 51684), (1752, 46610), (1770, 46136), (1896, 43070), (2190, 37288), (2360, 34602), (2370, 34456), (2832, 28835), (2920, 27966), (3160, 25842), (3504, 23305), (3540, 23068), (3792, 21535), (4307, 18960), (4380, 18644), (4661, 17520), (4720, 17301), (4740, 17228), (5767, 14160), (5840, 13983), (6320, 12921), (7080, 11534), (8614, 9480), (8760, 9322)]