221621820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{527671}}^1$

素因数の和:527690

約数の個数: 48

約数和(自身を含む): 709191168

約数和(自身を除く): 487569348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 527671, 1055342, 1583013, 2110684, 2638355, 3166026, 3693697, 5276710, 6332052, 7387394, 7915065, 10553420, 11081091, 14774788, 15830130, 18468485, 22162182, 31660260, 36936970, 44324364, 55405455, 73873940, 110810910, 221621820]

約数ペア:

[(1, 221621820), (2, 110810910), (3, 73873940), (4, 55405455), (5, 44324364), (6, 36936970), (7, 31660260), (10, 22162182), (12, 18468485), (14, 15830130), (15, 14774788), (20, 11081091), (21, 10553420), (28, 7915065), (30, 7387394), (35, 6332052), (42, 5276710), (60, 3693697), (70, 3166026), (84, 2638355), (105, 2110684), (140, 1583013), (210, 1055342), (420, 527671)]