254102780

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{269}}^1\times {\mathrm{647}}^1$

素因数の和:998

約数の個数: 48

約数和(自身を含む): 543775680

約数和(自身を除く): 289672900

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 269, 292, 365, 538, 647, 730, 1076, 1294, 1345, 1460, 2588, 2690, 3235, 5380, 6470, 12940, 19637, 39274, 47231, 78548, 94462, 98185, 174043, 188924, 196370, 236155, 348086, 392740, 472310, 696172, 870215, 944620, 1740430, 3480860, 12705139, 25410278, 50820556, 63525695, 127051390, 254102780]

約数ペア:

[(1, 254102780), (2, 127051390), (4, 63525695), (5, 50820556), (10, 25410278), (20, 12705139), (73, 3480860), (146, 1740430), (269, 944620), (292, 870215), (365, 696172), (538, 472310), (647, 392740), (730, 348086), (1076, 236155), (1294, 196370), (1345, 188924), (1460, 174043), (2588, 98185), (2690, 94462), (3235, 78548), (5380, 47231), (6470, 39274), (12940, 19637)]