81641040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:357

約数の個数: 160

約数和(自身を含む): 275982336

約数和(自身を除く): 194341296

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 137, 156, 191, 195, 208, 240, 260, 274, 312, 382, 390, 411, 520, 548, 573, 624, 685, 764, 780, 822, 955, 1040, 1096, 1146, 1370, 1528, 1560, 1644, 1781, 1910, 2055, 2192, 2292, 2483, 2740, 2865, 3056, 3120, 3288, 3562, 3820, 4110, 4584, 4966, 5343, 5480, 5730, 6576, 7124, 7449, 7640, 8220, 8905, 9168, 9932, 10686, 10960, 11460, 12415, 14248, 14898, 15280, 16440, 17810, 19864, 21372, 22920, 24830, 26167, 26715, 28496, 29796, 32880, 35620, 37245, 39728, 42744, 45840, 49660, 52334, 53430, 59592, 71240, 74490, 78501, 85488, 99320, 104668, 106860, 119184, 130835, 142480, 148980, 157002, 198640, 209336, 213720, 261670, 297960, 314004, 340171, 392505, 418672, 427440, 523340, 595920, 628008, 680342, 785010, 1020513, 1046680, 1256016, 1360684, 1570020, 1700855, 2041026, 2093360, 2721368, 3140040, 3401710, 4082052, 5102565, 5442736, 6280080, 6803420, 8164104, 10205130, 13606840, 16328208, 20410260, 27213680, 40820520, 81641040]

約数ペア:

[(1, 81641040), (2, 40820520), (3, 27213680), (4, 20410260), (5, 16328208), (6, 13606840), (8, 10205130), (10, 8164104), (12, 6803420), (13, 6280080), (15, 5442736), (16, 5102565), (20, 4082052), (24, 3401710), (26, 3140040), (30, 2721368), (39, 2093360), (40, 2041026), (48, 1700855), (52, 1570020), (60, 1360684), (65, 1256016), (78, 1046680), (80, 1020513), (104, 785010), (120, 680342), (130, 628008), (137, 595920), (156, 523340), (191, 427440), (195, 418672), (208, 392505), (240, 340171), (260, 314004), (274, 297960), (312, 261670), (382, 213720), (390, 209336), (411, 198640), (520, 157002), (548, 148980), (573, 142480), (624, 130835), (685, 119184), (764, 106860), (780, 104668), (822, 99320), (955, 85488), (1040, 78501), (1096, 74490), (1146, 71240), (1370, 59592), (1528, 53430), (1560, 52334), (1644, 49660), (1781, 45840), (1910, 42744), (2055, 39728), (2192, 37245), (2292, 35620), (2483, 32880), (2740, 29796), (2865, 28496), (3056, 26715), (3120, 26167), (3288, 24830), (3562, 22920), (3820, 21372), (4110, 19864), (4584, 17810), (4966, 16440), (5343, 15280), (5480, 14898), (5730, 14248), (6576, 12415), (7124, 11460), (7449, 10960), (7640, 10686), (8220, 9932), (8905, 9168)]