20084480

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:122

約数の個数: 144

約数和(自身を含む): 55629504

約数和(自身を除く): 35545024

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, 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, 2720, 2840, 3328, 3536, 3692, 4160, 4352, 4420, 4544, 4615, 4828, 5440, 5680, 6035, 7072, 7384, 8320, 8840, 9088, 9230, 9656, 10880, 11360, 12070, 14144, 14768, 15691, 16640, 17680, 18176, 18460, 19312, 21760, 22720, 24140, 28288, 29536, 31382, 35360, 36920, 38624, 45440, 48280, 56576, 59072, 62764, 70720, 73840, 77248, 78455, 90880, 96560, 118144, 125528, 141440, 147680, 154496, 156910, 193120, 236288, 251056, 282880, 295360, 308992, 313820, 386240, 502112, 590720, 627640, 772480, 1004224, 1181440, 1255280, 1544960, 2008448, 2510560, 4016896, 5021120, 10042240, 20084480]

約数ペア:

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