21434620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2741}}^1$

素因数の和:2790

約数の個数: 48

約数和(自身を含む): 49750848

約数和(自身を除く): 28316228

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2741, 3910, 5482, 7820, 10964, 13705, 27410, 46597, 54820, 63043, 93194, 126086, 186388, 232985, 252172, 315215, 465970, 630430, 931940, 1071731, 1260860, 2143462, 4286924, 5358655, 10717310, 21434620]

約数ペア:

[(1, 21434620), (2, 10717310), (4, 5358655), (5, 4286924), (10, 2143462), (17, 1260860), (20, 1071731), (23, 931940), (34, 630430), (46, 465970), (68, 315215), (85, 252172), (92, 232985), (115, 186388), (170, 126086), (230, 93194), (340, 63043), (391, 54820), (460, 46597), (782, 27410), (1564, 13705), (1955, 10964), (2741, 7820), (3910, 5482)]