245890281

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{577}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 413274624

約数和(自身を除く): 167384343

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 223, 273, 577, 637, 669, 1561, 1731, 1911, 2899, 4039, 4683, 7501, 8697, 10927, 12117, 20293, 22503, 28273, 32781, 52507, 60879, 84819, 128671, 142051, 157521, 367549, 386013, 426153, 900697, 1102647, 1672723, 2702091, 5018169, 6304879, 11709061, 18914637, 35127183, 81963427, 245890281]

約数ペア:

[(1, 245890281), (3, 81963427), (7, 35127183), (13, 18914637), (21, 11709061), (39, 6304879), (49, 5018169), (91, 2702091), (147, 1672723), (223, 1102647), (273, 900697), (577, 426153), (637, 386013), (669, 367549), (1561, 157521), (1731, 142051), (1911, 128671), (2899, 84819), (4039, 60879), (4683, 52507), (7501, 32781), (8697, 28273), (10927, 22503), (12117, 20293)]