128437100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1979}}^1$

素因数の和:2063

約数の個数: 72

約数和(自身を含む): 309355200

約数和(自身を除く): 180918100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 59, 100, 110, 118, 220, 236, 275, 295, 550, 590, 649, 1100, 1180, 1298, 1475, 1979, 2596, 2950, 3245, 3958, 5900, 6490, 7916, 9895, 12980, 16225, 19790, 21769, 32450, 39580, 43538, 49475, 64900, 87076, 98950, 108845, 116761, 197900, 217690, 233522, 435380, 467044, 544225, 583805, 1088450, 1167610, 1284371, 2176900, 2335220, 2568742, 2919025, 5137484, 5838050, 6421855, 11676100, 12843710, 25687420, 32109275, 64218550, 128437100]

約数ペア:

[(1, 128437100), (2, 64218550), (4, 32109275), (5, 25687420), (10, 12843710), (11, 11676100), (20, 6421855), (22, 5838050), (25, 5137484), (44, 2919025), (50, 2568742), (55, 2335220), (59, 2176900), (100, 1284371), (110, 1167610), (118, 1088450), (220, 583805), (236, 544225), (275, 467044), (295, 435380), (550, 233522), (590, 217690), (649, 197900), (1100, 116761), (1180, 108845), (1298, 98950), (1475, 87076), (1979, 64900), (2596, 49475), (2950, 43538), (3245, 39580), (3958, 32450), (5900, 21769), (6490, 19790), (7916, 16225), (9895, 12980)]