19890990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{31573}}^1$

素因数の和:31593

約数の個数: 48

約数和(自身を含む): 59106528

約数和(自身を除く): 39215538

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 31573, 63146, 94719, 157865, 189438, 221011, 284157, 315730, 442022, 473595, 568314, 663033, 947190, 1105055, 1326066, 1420785, 1989099, 2210110, 2841570, 3315165, 3978198, 6630330, 9945495, 19890990]

約数ペア:

[(1, 19890990), (2, 9945495), (3, 6630330), (5, 3978198), (6, 3315165), (7, 2841570), (9, 2210110), (10, 1989099), (14, 1420785), (15, 1326066), (18, 1105055), (21, 947190), (30, 663033), (35, 568314), (42, 473595), (45, 442022), (63, 315730), (70, 284157), (90, 221011), (105, 189438), (126, 157865), (210, 94719), (315, 63146), (630, 31573)]