28880720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{887}}^1$

素因数の和:948

約数の個数: 80

約数和(自身を含む): 75316608

約数和(自身を除く): 46435888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 740, 814, 880, 887, 1480, 1628, 1774, 2035, 2960, 3256, 3548, 4070, 4435, 6512, 7096, 8140, 8870, 9757, 14192, 16280, 17740, 19514, 32560, 32819, 35480, 39028, 48785, 65638, 70960, 78056, 97570, 131276, 156112, 164095, 195140, 262552, 328190, 361009, 390280, 525104, 656380, 722018, 780560, 1312760, 1444036, 1805045, 2625520, 2888072, 3610090, 5776144, 7220180, 14440360, 28880720]

約数ペア:

[(1, 28880720), (2, 14440360), (4, 7220180), (5, 5776144), (8, 3610090), (10, 2888072), (11, 2625520), (16, 1805045), (20, 1444036), (22, 1312760), (37, 780560), (40, 722018), (44, 656380), (55, 525104), (74, 390280), (80, 361009), (88, 328190), (110, 262552), (148, 195140), (176, 164095), (185, 156112), (220, 131276), (296, 97570), (370, 78056), (407, 70960), (440, 65638), (592, 48785), (740, 39028), (814, 35480), (880, 32819), (887, 32560), (1480, 19514), (1628, 17740), (1774, 16280), (2035, 14192), (2960, 9757), (3256, 8870), (3548, 8140), (4070, 7096), (4435, 6512)]