21029750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 45961344

約数和(自身を除く): 24931594

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 61, 70, 122, 125, 175, 197, 250, 305, 350, 394, 427, 610, 854, 875, 985, 1379, 1525, 1750, 1970, 2135, 2758, 3050, 4270, 4925, 6895, 7625, 9850, 10675, 12017, 13790, 15250, 21350, 24034, 24625, 34475, 49250, 53375, 60085, 68950, 84119, 106750, 120170, 168238, 172375, 300425, 344750, 420595, 600850, 841190, 1502125, 2102975, 3004250, 4205950, 10514875, 21029750]

約数ペア:

[(1, 21029750), (2, 10514875), (5, 4205950), (7, 3004250), (10, 2102975), (14, 1502125), (25, 841190), (35, 600850), (50, 420595), (61, 344750), (70, 300425), (122, 172375), (125, 168238), (175, 120170), (197, 106750), (250, 84119), (305, 68950), (350, 60085), (394, 53375), (427, 49250), (610, 34475), (854, 24625), (875, 24034), (985, 21350), (1379, 15250), (1525, 13790), (1750, 12017), (1970, 10675), (2135, 9850), (2758, 7625), (3050, 6895), (4270, 4925)]