21325560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2503}}^1$

素因数の和:2588

約数の個数: 64

約数和(自身を含む): 64903680

約数和(自身を除く): 43578120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2503, 2840, 4260, 5006, 7509, 8520, 10012, 12515, 15018, 20024, 25030, 30036, 37545, 50060, 60072, 75090, 100120, 150180, 177713, 300360, 355426, 533139, 710852, 888565, 1066278, 1421704, 1777130, 2132556, 2665695, 3554260, 4265112, 5331390, 7108520, 10662780, 21325560]

約数ペア:

[(1, 21325560), (2, 10662780), (3, 7108520), (4, 5331390), (5, 4265112), (6, 3554260), (8, 2665695), (10, 2132556), (12, 1777130), (15, 1421704), (20, 1066278), (24, 888565), (30, 710852), (40, 533139), (60, 355426), (71, 300360), (120, 177713), (142, 150180), (213, 100120), (284, 75090), (355, 60072), (426, 50060), (568, 37545), (710, 30036), (852, 25030), (1065, 20024), (1420, 15018), (1704, 12515), (2130, 10012), (2503, 8520), (2840, 7509), (4260, 5006)]