18007280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:234

約数の個数: 80

約数和(自身を含む): 44354304

約数和(自身を除く): 26347024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 53, 62, 80, 106, 124, 137, 155, 212, 248, 265, 274, 310, 424, 496, 530, 548, 620, 685, 848, 1060, 1096, 1240, 1370, 1643, 2120, 2192, 2480, 2740, 3286, 4240, 4247, 5480, 6572, 7261, 8215, 8494, 10960, 13144, 14522, 16430, 16988, 21235, 26288, 29044, 32860, 33976, 36305, 42470, 58088, 65720, 67952, 72610, 84940, 116176, 131440, 145220, 169880, 225091, 290440, 339760, 450182, 580880, 900364, 1125455, 1800728, 2250910, 3601456, 4501820, 9003640, 18007280]

約数ペア:

[(1, 18007280), (2, 9003640), (4, 4501820), (5, 3601456), (8, 2250910), (10, 1800728), (16, 1125455), (20, 900364), (31, 580880), (40, 450182), (53, 339760), (62, 290440), (80, 225091), (106, 169880), (124, 145220), (137, 131440), (155, 116176), (212, 84940), (248, 72610), (265, 67952), (274, 65720), (310, 58088), (424, 42470), (496, 36305), (530, 33976), (548, 32860), (620, 29044), (685, 26288), (848, 21235), (1060, 16988), (1096, 16430), (1240, 14522), (1370, 13144), (1643, 10960), (2120, 8494), (2192, 8215), (2480, 7261), (2740, 6572), (3286, 5480), (4240, 4247)]