20212560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1$

素因数の和:505

約数の個数: 120

約数和(自身を含む): 69058080

約数和(自身を除く): 48845520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 67, 72, 80, 90, 120, 134, 144, 180, 201, 240, 268, 335, 360, 402, 419, 536, 603, 670, 720, 804, 838, 1005, 1072, 1206, 1257, 1340, 1608, 1676, 2010, 2095, 2412, 2514, 2680, 3015, 3216, 3352, 3771, 4020, 4190, 4824, 5028, 5360, 6030, 6285, 6704, 7542, 8040, 8380, 9648, 10056, 12060, 12570, 15084, 16080, 16760, 18855, 20112, 24120, 25140, 28073, 30168, 33520, 37710, 48240, 50280, 56146, 60336, 75420, 84219, 100560, 112292, 140365, 150840, 168438, 224584, 252657, 280730, 301680, 336876, 421095, 449168, 505314, 561460, 673752, 842190, 1010628, 1122920, 1263285, 1347504, 1684380, 2021256, 2245840, 2526570, 3368760, 4042512, 5053140, 6737520, 10106280, 20212560]

約数ペア:

[(1, 20212560), (2, 10106280), (3, 6737520), (4, 5053140), (5, 4042512), (6, 3368760), (8, 2526570), (9, 2245840), (10, 2021256), (12, 1684380), (15, 1347504), (16, 1263285), (18, 1122920), (20, 1010628), (24, 842190), (30, 673752), (36, 561460), (40, 505314), (45, 449168), (48, 421095), (60, 336876), (67, 301680), (72, 280730), (80, 252657), (90, 224584), (120, 168438), (134, 150840), (144, 140365), (180, 112292), (201, 100560), (240, 84219), (268, 75420), (335, 60336), (360, 56146), (402, 50280), (419, 48240), (536, 37710), (603, 33520), (670, 30168), (720, 28073), (804, 25140), (838, 24120), (1005, 20112), (1072, 18855), (1206, 16760), (1257, 16080), (1340, 15084), (1608, 12570), (1676, 12060), (2010, 10056), (2095, 9648), (2412, 8380), (2514, 8040), (2680, 7542), (3015, 6704), (3216, 6285), (3352, 6030), (3771, 5360), (4020, 5028), (4190, 4824)]