81991260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{947}}^1$

素因数の和:1012

約数の個数: 144

約数和(自身を含む): 275367456

約数和(自身を除く): 193376196

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 37, 39, 45, 52, 60, 65, 74, 78, 90, 111, 117, 130, 148, 156, 180, 185, 195, 222, 234, 260, 333, 370, 390, 444, 468, 481, 555, 585, 666, 740, 780, 947, 962, 1110, 1170, 1332, 1443, 1665, 1894, 1924, 2220, 2340, 2405, 2841, 2886, 3330, 3788, 4329, 4735, 4810, 5682, 5772, 6660, 7215, 8523, 8658, 9470, 9620, 11364, 12311, 14205, 14430, 17046, 17316, 18940, 21645, 24622, 28410, 28860, 34092, 35039, 36933, 42615, 43290, 49244, 56820, 61555, 70078, 73866, 85230, 86580, 105117, 110799, 123110, 140156, 147732, 170460, 175195, 184665, 210234, 221598, 246220, 315351, 350390, 369330, 420468, 443196, 455507, 525585, 553995, 630702, 700780, 738660, 911014, 1051170, 1107990, 1261404, 1366521, 1576755, 1822028, 2102340, 2215980, 2277535, 2733042, 3153510, 4099563, 4555070, 5466084, 6307020, 6832605, 8199126, 9110140, 13665210, 16398252, 20497815, 27330420, 40995630, 81991260]

約数ペア:

[(1, 81991260), (2, 40995630), (3, 27330420), (4, 20497815), (5, 16398252), (6, 13665210), (9, 9110140), (10, 8199126), (12, 6832605), (13, 6307020), (15, 5466084), (18, 4555070), (20, 4099563), (26, 3153510), (30, 2733042), (36, 2277535), (37, 2215980), (39, 2102340), (45, 1822028), (52, 1576755), (60, 1366521), (65, 1261404), (74, 1107990), (78, 1051170), (90, 911014), (111, 738660), (117, 700780), (130, 630702), (148, 553995), (156, 525585), (180, 455507), (185, 443196), (195, 420468), (222, 369330), (234, 350390), (260, 315351), (333, 246220), (370, 221598), (390, 210234), (444, 184665), (468, 175195), (481, 170460), (555, 147732), (585, 140156), (666, 123110), (740, 110799), (780, 105117), (947, 86580), (962, 85230), (1110, 73866), (1170, 70078), (1332, 61555), (1443, 56820), (1665, 49244), (1894, 43290), (1924, 42615), (2220, 36933), (2340, 35039), (2405, 34092), (2841, 28860), (2886, 28410), (3330, 24622), (3788, 21645), (4329, 18940), (4735, 17316), (4810, 17046), (5682, 14430), (5772, 14205), (6660, 12311), (7215, 11364), (8523, 9620), (8658, 9470)]