2080509900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{990719}}^1$

素因数の和:990743

約数の個数: 72

約数和(自身を含む): 6879559680

約数和(自身を除く): 4799049780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 990719, 1981438, 2972157, 3962876, 4953595, 5944314, 6935033, 9907190, 11888628, 13870066, 14860785, 19814380, 20805099, 24767975, 27740132, 29721570, 34675165, 41610198, 49535950, 59443140, 69350330, 74303925, 83220396, 99071900, 104025495, 138700660, 148607850, 173375825, 208050990, 297215700, 346751650, 416101980, 520127475, 693503300, 1040254950, 2080509900]

約数ペア:

[(1, 2080509900), (2, 1040254950), (3, 693503300), (4, 520127475), (5, 416101980), (6, 346751650), (7, 297215700), (10, 208050990), (12, 173375825), (14, 148607850), (15, 138700660), (20, 104025495), (21, 99071900), (25, 83220396), (28, 74303925), (30, 69350330), (35, 59443140), (42, 49535950), (50, 41610198), (60, 34675165), (70, 29721570), (75, 27740132), (84, 24767975), (100, 20805099), (105, 19814380), (140, 14860785), (150, 13870066), (175, 11888628), (210, 9907190), (300, 6935033), (350, 5944314), (420, 4953595), (525, 3962876), (700, 2972157), (1050, 1981438), (2100, 990719)]