81099040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 144

約数和(自身を含む): 217183680

約数和(自身を除く): 136084640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 59, 71, 80, 88, 110, 118, 121, 142, 160, 176, 220, 236, 242, 284, 295, 352, 355, 440, 472, 484, 568, 590, 605, 649, 710, 781, 880, 944, 968, 1136, 1180, 1210, 1298, 1420, 1562, 1760, 1888, 1936, 2272, 2360, 2420, 2596, 2840, 3124, 3245, 3872, 3905, 4189, 4720, 4840, 5192, 5680, 6248, 6490, 7139, 7810, 8378, 8591, 9440, 9680, 10384, 11360, 12496, 12980, 14278, 15620, 16756, 17182, 19360, 20768, 20945, 24992, 25960, 28556, 31240, 33512, 34364, 35695, 41890, 42955, 46079, 51920, 57112, 62480, 67024, 68728, 71390, 83780, 85910, 92158, 103840, 114224, 124960, 134048, 137456, 142780, 167560, 171820, 184316, 228448, 230395, 274912, 285560, 335120, 343640, 368632, 460790, 506869, 571120, 670240, 687280, 737264, 921580, 1013738, 1142240, 1374560, 1474528, 1843160, 2027476, 2534345, 3686320, 4054952, 5068690, 7372640, 8109904, 10137380, 16219808, 20274760, 40549520, 81099040]

約数ペア:

[(1, 81099040), (2, 40549520), (4, 20274760), (5, 16219808), (8, 10137380), (10, 8109904), (11, 7372640), (16, 5068690), (20, 4054952), (22, 3686320), (32, 2534345), (40, 2027476), (44, 1843160), (55, 1474528), (59, 1374560), (71, 1142240), (80, 1013738), (88, 921580), (110, 737264), (118, 687280), (121, 670240), (142, 571120), (160, 506869), (176, 460790), (220, 368632), (236, 343640), (242, 335120), (284, 285560), (295, 274912), (352, 230395), (355, 228448), (440, 184316), (472, 171820), (484, 167560), (568, 142780), (590, 137456), (605, 134048), (649, 124960), (710, 114224), (781, 103840), (880, 92158), (944, 85910), (968, 83780), (1136, 71390), (1180, 68728), (1210, 67024), (1298, 62480), (1420, 57112), (1562, 51920), (1760, 46079), (1888, 42955), (1936, 41890), (2272, 35695), (2360, 34364), (2420, 33512), (2596, 31240), (2840, 28556), (3124, 25960), (3245, 24992), (3872, 20945), (3905, 20768), (4189, 19360), (4720, 17182), (4840, 16756), (5192, 15620), (5680, 14278), (6248, 12980), (6490, 12496), (7139, 11360), (7810, 10384), (8378, 9680), (8591, 9440)]