81500900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{883}}^1$

素因数の和:981

約数の個数: 72

約数和(自身を含む): 193362624

約数和(自身を除く): 111861724

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 260, 284, 325, 355, 650, 710, 883, 923, 1300, 1420, 1766, 1775, 1846, 3532, 3550, 3692, 4415, 4615, 7100, 8830, 9230, 11479, 17660, 18460, 22075, 22958, 23075, 44150, 45916, 46150, 57395, 62693, 88300, 92300, 114790, 125386, 229580, 250772, 286975, 313465, 573950, 626930, 815009, 1147900, 1253860, 1567325, 1630018, 3134650, 3260036, 4075045, 6269300, 8150090, 16300180, 20375225, 40750450, 81500900]

約数ペア:

[(1, 81500900), (2, 40750450), (4, 20375225), (5, 16300180), (10, 8150090), (13, 6269300), (20, 4075045), (25, 3260036), (26, 3134650), (50, 1630018), (52, 1567325), (65, 1253860), (71, 1147900), (100, 815009), (130, 626930), (142, 573950), (260, 313465), (284, 286975), (325, 250772), (355, 229580), (650, 125386), (710, 114790), (883, 92300), (923, 88300), (1300, 62693), (1420, 57395), (1766, 46150), (1775, 45916), (1846, 44150), (3532, 23075), (3550, 22958), (3692, 22075), (4415, 18460), (4615, 17660), (7100, 11479), (8830, 9230)]