20587980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49019}}^1$

素因数の和:49038

約数の個数: 48

約数和(自身を含む): 65882880

約数和(自身を除く): 45294900

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, 49019, 98038, 147057, 196076, 245095, 294114, 343133, 490190, 588228, 686266, 735285, 980380, 1029399, 1372532, 1470570, 1715665, 2058798, 2941140, 3431330, 4117596, 5146995, 6862660, 10293990, 20587980]

約数ペア:

[(1, 20587980), (2, 10293990), (3, 6862660), (4, 5146995), (5, 4117596), (6, 3431330), (7, 2941140), (10, 2058798), (12, 1715665), (14, 1470570), (15, 1372532), (20, 1029399), (21, 980380), (28, 735285), (30, 686266), (35, 588228), (42, 490190), (60, 343133), (70, 294114), (84, 245095), (105, 196076), (140, 147057), (210, 98038), (420, 49019)]