31381980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{74719}}^1$

素因数の和:74738

約数の個数: 48

約数和(自身を含む): 100423680

約数和(自身を除く): 69041700

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, 74719, 149438, 224157, 298876, 373595, 448314, 523033, 747190, 896628, 1046066, 1120785, 1494380, 1569099, 2092132, 2241570, 2615165, 3138198, 4483140, 5230330, 6276396, 7845495, 10460660, 15690990, 31381980]

約数ペア:

[(1, 31381980), (2, 15690990), (3, 10460660), (4, 7845495), (5, 6276396), (6, 5230330), (7, 4483140), (10, 3138198), (12, 2615165), (14, 2241570), (15, 2092132), (20, 1569099), (21, 1494380), (28, 1120785), (30, 1046066), (35, 896628), (42, 747190), (60, 523033), (70, 448314), (84, 373595), (105, 298876), (140, 224157), (210, 149438), (420, 74719)]