81173560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4219}}^1$

素因数の和:4280

約数の個数: 64

約数和(自身を含む): 202053600

約数和(自身を除く): 120880040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1924, 2405, 3848, 4219, 4810, 8438, 9620, 16876, 19240, 21095, 33752, 42190, 54847, 84380, 109694, 156103, 168760, 219388, 274235, 312206, 438776, 548470, 624412, 780515, 1096940, 1248824, 1561030, 2029339, 2193880, 3122060, 4058678, 6244120, 8117356, 10146695, 16234712, 20293390, 40586780, 81173560]

約数ペア:

[(1, 81173560), (2, 40586780), (4, 20293390), (5, 16234712), (8, 10146695), (10, 8117356), (13, 6244120), (20, 4058678), (26, 3122060), (37, 2193880), (40, 2029339), (52, 1561030), (65, 1248824), (74, 1096940), (104, 780515), (130, 624412), (148, 548470), (185, 438776), (260, 312206), (296, 274235), (370, 219388), (481, 168760), (520, 156103), (740, 109694), (962, 84380), (1480, 54847), (1924, 42190), (2405, 33752), (3848, 21095), (4219, 19240), (4810, 16876), (8438, 9620)]