81831960

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{4639}}^1$

素因数の和:4670

約数の個数: 144

約数和(自身を含む): 309441600

約数和(自身を除く): 227609640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1260, 1470, 1764, 1960, 2205, 2520, 2940, 3528, 4410, 4639, 5880, 8820, 9278, 13917, 17640, 18556, 23195, 27834, 32473, 37112, 41751, 46390, 55668, 64946, 69585, 83502, 92780, 97419, 111336, 129892, 139170, 162365, 167004, 185560, 194838, 208755, 227311, 259784, 278340, 292257, 324730, 334008, 389676, 417510, 454622, 487095, 556680, 584514, 649460, 681933, 779352, 835020, 909244, 974190, 1136555, 1169028, 1298920, 1363866, 1461285, 1670040, 1818488, 1948380, 2045799, 2273110, 2338056, 2727732, 2922570, 3409665, 3896760, 4091598, 4546220, 5455464, 5845140, 6819330, 8183196, 9092440, 10228995, 11690280, 13638660, 16366392, 20457990, 27277320, 40915980, 81831960]

約数ペア:

[(1, 81831960), (2, 40915980), (3, 27277320), (4, 20457990), (5, 16366392), (6, 13638660), (7, 11690280), (8, 10228995), (9, 9092440), (10, 8183196), (12, 6819330), (14, 5845140), (15, 5455464), (18, 4546220), (20, 4091598), (21, 3896760), (24, 3409665), (28, 2922570), (30, 2727732), (35, 2338056), (36, 2273110), (40, 2045799), (42, 1948380), (45, 1818488), (49, 1670040), (56, 1461285), (60, 1363866), (63, 1298920), (70, 1169028), (72, 1136555), (84, 974190), (90, 909244), (98, 835020), (105, 779352), (120, 681933), (126, 649460), (140, 584514), (147, 556680), (168, 487095), (180, 454622), (196, 417510), (210, 389676), (245, 334008), (252, 324730), (280, 292257), (294, 278340), (315, 259784), (360, 227311), (392, 208755), (420, 194838), (441, 185560), (490, 167004), (504, 162365), (588, 139170), (630, 129892), (735, 111336), (840, 97419), (882, 92780), (980, 83502), (1176, 69585), (1260, 64946), (1470, 55668), (1764, 46390), (1960, 41751), (2205, 37112), (2520, 32473), (2940, 27834), (3528, 23195), (4410, 18556), (4639, 17640), (5880, 13917), (8820, 9278)]