21519840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{419}}^1$

素因数の和:544

約数の個数: 96

約数和(自身を含む): 68584320

約数和(自身を除く): 47064480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 107, 120, 160, 214, 240, 321, 419, 428, 480, 535, 642, 838, 856, 1070, 1257, 1284, 1605, 1676, 1712, 2095, 2140, 2514, 2568, 3210, 3352, 3424, 4190, 4280, 5028, 5136, 6285, 6420, 6704, 8380, 8560, 10056, 10272, 12570, 12840, 13408, 16760, 17120, 20112, 25140, 25680, 33520, 40224, 44833, 50280, 51360, 67040, 89666, 100560, 134499, 179332, 201120, 224165, 268998, 358664, 448330, 537996, 672495, 717328, 896660, 1075992, 1344990, 1434656, 1793320, 2151984, 2689980, 3586640, 4303968, 5379960, 7173280, 10759920, 21519840]

約数ペア:

[(1, 21519840), (2, 10759920), (3, 7173280), (4, 5379960), (5, 4303968), (6, 3586640), (8, 2689980), (10, 2151984), (12, 1793320), (15, 1434656), (16, 1344990), (20, 1075992), (24, 896660), (30, 717328), (32, 672495), (40, 537996), (48, 448330), (60, 358664), (80, 268998), (96, 224165), (107, 201120), (120, 179332), (160, 134499), (214, 100560), (240, 89666), (321, 67040), (419, 51360), (428, 50280), (480, 44833), (535, 40224), (642, 33520), (838, 25680), (856, 25140), (1070, 20112), (1257, 17120), (1284, 16760), (1605, 13408), (1676, 12840), (1712, 12570), (2095, 10272), (2140, 10056), (2514, 8560), (2568, 8380), (3210, 6704), (3352, 6420), (3424, 6285), (4190, 5136), (4280, 5028)]