40168960

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:124

約数の個数: 160

約数和(自身を含む): 111367872

約数和(自身を除く): 71198912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 71, 80, 85, 104, 128, 130, 136, 142, 160, 170, 208, 221, 256, 260, 272, 284, 320, 340, 355, 416, 442, 512, 520, 544, 568, 640, 680, 710, 832, 884, 923, 1040, 1088, 1105, 1136, 1207, 1280, 1360, 1420, 1664, 1768, 1846, 2080, 2176, 2210, 2272, 2414, 2560, 2720, 2840, 3328, 3536, 3692, 4160, 4352, 4420, 4544, 4615, 4828, 5440, 5680, 6035, 6656, 7072, 7384, 8320, 8704, 8840, 9088, 9230, 9656, 10880, 11360, 12070, 14144, 14768, 15691, 16640, 17680, 18176, 18460, 19312, 21760, 22720, 24140, 28288, 29536, 31382, 33280, 35360, 36352, 36920, 38624, 43520, 45440, 48280, 56576, 59072, 62764, 70720, 73840, 77248, 78455, 90880, 96560, 113152, 118144, 125528, 141440, 147680, 154496, 156910, 181760, 193120, 236288, 251056, 282880, 295360, 308992, 313820, 386240, 472576, 502112, 565760, 590720, 617984, 627640, 772480, 1004224, 1181440, 1255280, 1544960, 2008448, 2362880, 2510560, 3089920, 4016896, 5021120, 8033792, 10042240, 20084480, 40168960]

約数ペア:

[(1, 40168960), (2, 20084480), (4, 10042240), (5, 8033792), (8, 5021120), (10, 4016896), (13, 3089920), (16, 2510560), (17, 2362880), (20, 2008448), (26, 1544960), (32, 1255280), (34, 1181440), (40, 1004224), (52, 772480), (64, 627640), (65, 617984), (68, 590720), (71, 565760), (80, 502112), (85, 472576), (104, 386240), (128, 313820), (130, 308992), (136, 295360), (142, 282880), (160, 251056), (170, 236288), (208, 193120), (221, 181760), (256, 156910), (260, 154496), (272, 147680), (284, 141440), (320, 125528), (340, 118144), (355, 113152), (416, 96560), (442, 90880), (512, 78455), (520, 77248), (544, 73840), (568, 70720), (640, 62764), (680, 59072), (710, 56576), (832, 48280), (884, 45440), (923, 43520), (1040, 38624), (1088, 36920), (1105, 36352), (1136, 35360), (1207, 33280), (1280, 31382), (1360, 29536), (1420, 28288), (1664, 24140), (1768, 22720), (1846, 21760), (2080, 19312), (2176, 18460), (2210, 18176), (2272, 17680), (2414, 16640), (2560, 15691), (2720, 14768), (2840, 14144), (3328, 12070), (3536, 11360), (3692, 10880), (4160, 9656), (4352, 9230), (4420, 9088), (4544, 8840), (4615, 8704), (4828, 8320), (5440, 7384), (5680, 7072), (6035, 6656)]