20419672

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4007}}^1$

素因数の和:4040

約数の個数: 48

約数和(自身を含む): 47975760

約数和(自身を除く): 27556088

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4007, 5096, 8014, 16028, 28049, 32056, 52091, 56098, 104182, 112196, 196343, 208364, 224392, 364637, 392686, 416728, 729274, 785372, 1458548, 1570744, 2552459, 2917096, 5104918, 10209836, 20419672]

約数ペア:

[(1, 20419672), (2, 10209836), (4, 5104918), (7, 2917096), (8, 2552459), (13, 1570744), (14, 1458548), (26, 785372), (28, 729274), (49, 416728), (52, 392686), (56, 364637), (91, 224392), (98, 208364), (104, 196343), (182, 112196), (196, 104182), (364, 56098), (392, 52091), (637, 32056), (728, 28049), (1274, 16028), (2548, 8014), (4007, 5096)]