19994060

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 24247060

約数列:

[1, 2, 4, 5, 10, 20, 37, 41, 74, 82, 148, 164, 185, 205, 370, 410, 659, 740, 820, 1318, 1517, 2636, 3034, 3295, 6068, 6590, 7585, 13180, 15170, 24383, 27019, 30340, 48766, 54038, 97532, 108076, 121915, 135095, 243830, 270190, 487660, 540380, 999703, 1999406, 3998812, 4998515, 9997030, 19994060]

約数ペア:

[(1, 19994060), (2, 9997030), (4, 4998515), (5, 3998812), (10, 1999406), (20, 999703), (37, 540380), (41, 487660), (74, 270190), (82, 243830), (148, 135095), (164, 121915), (185, 108076), (205, 97532), (370, 54038), (410, 48766), (659, 30340), (740, 27019), (820, 24383), (1318, 15170), (1517, 13180), (2636, 7585), (3034, 6590), (3295, 6068)]